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        Api
        Basildon
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        Web Applications Developer

        VANLOQ LIMITED
        London
        Unspecified
        Solid experience with Python and FastAPI for backend/API development.
        Solid experience with Python and FastAPI for backend/API development.
        .NET Framework Version 4.5 or above including strong WCF\ Web API experience
        .NET Framework Version 4.5 or above including strong WCF\ Web API experience
        NEW
        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
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        NEW
        Hawkrose is delighted to announce we are hiring for the role of Senior Software Developer. In this role, the successful candidate will be responsible for the delivery of exciting projects and products across our Civil Aviation, Defence and Public Sector industry verticals. The successful candidate will be given the autonomy to set their own direction of work, and will work closely with the Head of Development to establish best practice across the Hawkrose development function. The role requires a mixture of home and office working with the expectation that the successful candidate will manage their own time and location to best deliver for our customers. Required Skills - The successful candidate will be a full stack software engineer with experience of enterprise grade software development and an agile development environment.
        Hawkrose is delighted to announce we are hiring for the role of Senior Software Developer. In this role, the successful candidate will be responsible for the delivery of exciting projects and products across our Civil Aviation, Defence and Public Sector industry verticals. The successful candidate will be given the autonomy to set their own direction of work, and will work closely with the Head of Development to establish best practice across the Hawkrose development function. The role requires a mixture of home and office working with the expectation that the successful candidate will manage their own time and location to best deliver for our customers. Required Skills - The successful candidate will be a full stack software engineer with experience of enterprise grade software development and an agile development environment.
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        NEW
        Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
        Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
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        NEWFEATURED
        5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
        5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
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        NEW

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        Power Platform Developer

        MARKS SATTIN (UK) LIMITED
        City of London, London
        Up to £45000.00 per annum + + Package
        Your new organisation is a globally recognised accountancy firm in the centre of London, and they are looking to hire a Power Platform Developer to join their wider Development function as they look to further improve and develop the Microsoft Power Platform. In your role, you will work with various business stakeholders to understand requirements, and then work to transform them into efficient processes within the platform itself. Utilising Power Apps, Automate and Power BI you will design technical solutions and work alongside senior developers to implement them, ensuring the business remains at the forefront of digital transformation. In order to succeed in this role, you must have a minimum of 3 years working hands on, developing Power Platforms. You will be able to demonstrate an
        Your new organisation is a globally recognised accountancy firm in the centre of London, and they are looking to hire a Power Platform Developer to join their wider Development function as they look to further improve and develop the Microsoft Power Platform. In your role, you will work with various business stakeholders to understand requirements, and then work to transform them into efficient processes within the platform itself. Utilising Power Apps, Automate and Power BI you will design technical solutions and work alongside senior developers to implement them, ensuring the business remains at the forefront of digital transformation. In order to succeed in this role, you must have a minimum of 3 years working hands on, developing Power Platforms. You will be able to demonstrate an
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        Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. * Relevant software development experience, with strong expertise in .NET (C#) And ideally VB.NET - Contract - 6 Months - East Sussex - Hybrid model (3 days p/w on site) £375 - 425 p/d (outside IR35) Key Roles * Participate in migration of legacy systems built in C#, VB.NET, Angular, using SQL Server technologies. * Maintaining applications, ensuring reliability, maintainability, and evolution. * Act as a liaison between the development team and internal business stakeholders. * Implementation of modern architectures: micro services, containerised services, and serverless cloud-native components in AWS. * Diagnose and resolve complex support issues. * Collaborate with Business Anal
        Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. * Relevant software development experience, with strong expertise in .NET (C#) And ideally VB.NET - Contract - 6 Months - East Sussex - Hybrid model (3 days p/w on site) £375 - 425 p/d (outside IR35) Key Roles * Participate in migration of legacy systems built in C#, VB.NET, Angular, using SQL Server technologies. * Maintaining applications, ensuring reliability, maintainability, and evolution. * Act as a liaison between the development team and internal business stakeholders. * Implementation of modern architectures: micro services, containerised services, and serverless cloud-native components in AWS. * Diagnose and resolve complex support issues. * Collaborate with Business Anal
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        FEATURED

        Software Engineer - Full Stack

        Anson Mccade
        South East
        GBP 70,035.00 per year;GBP 700.00 per week;GBP 70,000.00 per year;GBP
        As a Full Stack Software Engineer, you'll work closely with law enforcement customers to design, build, and maintain secure applications and services. * Design, develop, and maintain secure full-stack applications using modern frameworks and cloud-native technologies. They deliver secure, mission-critical software solutions that help protect the UK and its interests. With a strong focus on innovation, collaboration, and agility, they empower engineers to solve complex challenges in high-trust environments. * Collaborate with cross-functional teams and end-users to understand mission needs and translate them into scalable software solutions. This is a unique opportunity to contribute to national security through cutting-edge software engineering. ££700
        As a Full Stack Software Engineer, you'll work closely with law enforcement customers to design, build, and maintain secure applications and services. * Design, develop, and maintain secure full-stack applications using modern frameworks and cloud-native technologies. They deliver secure, mission-critical software solutions that help protect the UK and its interests. With a strong focus on innovation, collaboration, and agility, they empower engineers to solve complex challenges in high-trust environments. * Collaborate with cross-functional teams and end-users to understand mission needs and translate them into scalable software solutions. This is a unique opportunity to contribute to national security through cutting-edge software engineering. ££700
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        PREMIUM

        Senior Developer (m/f/d)

        SEFE MARKETING & TRADING LIMITED
        NW1, North West London
        To define
        The Senior Developer has multiple responsibilities within the organization. It is expected that a Senior Developer will work on a portfolio of different software products during their time in the organization and will coach different individuals in their career. * Understand the technical needs/dependencies with other applications/teams and manage these with the Lead Developers and Architects to ensure the correct technical solutions are implemented - Their?time is broken down to software delivery and junior developer coaching responsibilities. * Demonstrated technical authority and leadership, with experience mentoring or coaching junior developers. SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFEs activities
        The Senior Developer has multiple responsibilities within the organization. It is expected that a Senior Developer will work on a portfolio of different software products during their time in the organization and will coach different individuals in their career. * Understand the technical needs/dependencies with other applications/teams and manage these with the Lead Developers and Architects to ensure the correct technical solutions are implemented - Their?time is broken down to software delivery and junior developer coaching responsibilities. * Demonstrated technical authority and leadership, with experience mentoring or coaching junior developers. SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFEs activities
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        NEWFEATURED

        Fullstack .Net Developer

        Hays
        London
        £500.0 - £545.0 per day + Up to £545pd Umbrella
        I am currently working with a global engineering client who are actively seeking a Fullstack .Net Developer on a long-term contract basis. What you'll need to succeed * 10+ years' .Net Development experience, ideally in a large-scale organisation. * Strong fullstack experience with Razor, Blazor, & Javascript. * Strong experience with Azure Cloud Services. * Good understanding of DevOps best practices. * Experience with on-premises SQL services. What you'll get in return * Up to £545pd in-scope (Umbrella). * Initial 6-month contract with extensions. * Flexible hybrid working. What you need to do now - If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your caree
        I am currently working with a global engineering client who are actively seeking a Fullstack .Net Developer on a long-term contract basis. What you'll need to succeed * 10+ years' .Net Development experience, ideally in a large-scale organisation. * Strong fullstack experience with Razor, Blazor, & Javascript. * Strong experience with Azure Cloud Services. * Good understanding of DevOps best practices. * Experience with on-premises SQL services. What you'll get in return * Up to £545pd in-scope (Umbrella). * Initial 6-month contract with extensions. * Flexible hybrid working. What you need to do now - If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your caree
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        NEW
        This is a fantastic opportunity to work a remote Senior Fullstack Developer for a major pharmaceutical company on a long term contract, outside IR35. * Python * React * AI (desirable - If you do have the relevant experience for this remote, outside IR35 Senior Fullstack Developer role, please do send through your CV. * Typescript * AWS * SQL * Kubernetes (desirable)
        This is a fantastic opportunity to work a remote Senior Fullstack Developer for a major pharmaceutical company on a long term contract, outside IR35. * Python * React * AI (desirable - If you do have the relevant experience for this remote, outside IR35 Senior Fullstack Developer role, please do send through your CV. * Typescript * AWS * SQL * Kubernetes (desirable)
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        Software Engineer

        Oscar Associates (UK) Limited
        Camden, NW1
        £50000 - £60000 per annum
        Now they're looking for a Software Engineer to join their small but mighty technical team. This role is perfect for a software engineer who wants more than just writing code. Central London (Hybrid - ideally 2 days onsite, flexible)?? £50,000 - £60,000 + tailored bonus + benefits - The Opportunity - How often do you get the chance to join a business on the ground floor, where your code, your ideas, and your decisions directly shape the future of an entire industry? We're partnered with a high-growth PropTech firm that is redefining how property is bought, sold, managed, and experienced across the UK. They're not just another start-up tinkering on the edges of the market - they've already secured partnerships with major national brands and are scaling fast, with ambitious product launches ahead. This isn't just another dev role - it's
        Now they're looking for a Software Engineer to join their small but mighty technical team. This role is perfect for a software engineer who wants more than just writing code. Central London (Hybrid - ideally 2 days onsite, flexible)?? £50,000 - £60,000 + tailored bonus + benefits - The Opportunity - How often do you get the chance to join a business on the ground floor, where your code, your ideas, and your decisions directly shape the future of an entire industry? We're partnered with a high-growth PropTech firm that is redefining how property is bought, sold, managed, and experienced across the UK. They're not just another start-up tinkering on the edges of the market - they've already secured partnerships with major national brands and are scaling fast, with ambitious product launches ahead. This isn't just another dev role - it's
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        Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - £475 a day Outside IR35. Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - Outside IR35 - £475 a day - My client has an urgent need for a senior full stack AI Engineer this is outside IR35, 100% remote working and contract will be initially 6 months but likely to extend this is paying £475 a day * LLM applications: LangChain, Pydantic-AI (similar frameworks), RAG systems, MCP servers * backend (Python / FastAPI) leveraging a Python-based framework for LLMs and AI-agent (pydanti
        Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - £475 a day Outside IR35. Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - Outside IR35 - £475 a day - My client has an urgent need for a senior full stack AI Engineer this is outside IR35, 100% remote working and contract will be initially 6 months but likely to extend this is paying £475 a day * LLM applications: LangChain, Pydantic-AI (similar frameworks), RAG systems, MCP servers * backend (Python / FastAPI) leveraging a Python-based framework for LLMs and AI-agent (pydanti
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        Senior Software Developer | 6 Month Contract | £350-450 p/day | Hybrid - We are looking for a highly skilled Software Developer to join a fast paced contract role with a leading financial client. This is an exciting opportunity to work on complex, large scale systems while driving innovation, cost optimisation, and platform resilience. Location: Mostly Remote (occasional trips to London office) Contract: 6-months (OIR35) Rate: £400-450 p/day - Start date: Asap * Design, build, and maintain scalable microservices and full-stack applications. * Engineer and manage cloud infrastructure (Azure as primary, AWS/GCP as secondary). * Identify and implement cloud cost efficiencies while maintaining performance. * Oversee container orchestration with Kubernetes and Helm. * Develop and optimise CI/CD pipelines (Jenkins, CircleCI, GitHub Actions)
        Senior Software Developer | 6 Month Contract | £350-450 p/day | Hybrid - We are looking for a highly skilled Software Developer to join a fast paced contract role with a leading financial client. This is an exciting opportunity to work on complex, large scale systems while driving innovation, cost optimisation, and platform resilience. Location: Mostly Remote (occasional trips to London office) Contract: 6-months (OIR35) Rate: £400-450 p/day - Start date: Asap * Design, build, and maintain scalable microservices and full-stack applications. * Engineer and manage cloud infrastructure (Azure as primary, AWS/GCP as secondary). * Identify and implement cloud cost efficiencies while maintaining performance. * Oversee container orchestration with Kubernetes and Helm. * Develop and optimise CI/CD pipelines (Jenkins, CircleCI, GitHub Actions)
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        Senior Full Stack Engineer

        REVYBE IT RECRUITMENT LIMITED
        EC1, City of London
        From £90,000 to £120,000 per annum + Shares
        Theyre now looking for a Senior Full-Stack Engineer to help design and build the next generation of their AI-driven platform. * Strong experience as a Full-Stack Engineer across React, Next.js, Node.js, and Python. Reporting directly into the CTO and collaborating closely with product and research teams, this is a unique chance to take ownership across the stack and make a lasting impact in a company at the forefront of applied AI. The role is full-time, 5 days a week in their London office. London AI Start-up - Up to £120,000 + Shares + Private Healthcare + Pension - Were working with a well-funded AI start-up in London thats gearing up for huge growth. Theyre expecting to scale 10x over the next 18 months. The role - This isnt your standard engineering role youll be
        Theyre now looking for a Senior Full-Stack Engineer to help design and build the next generation of their AI-driven platform. * Strong experience as a Full-Stack Engineer across React, Next.js, Node.js, and Python. Reporting directly into the CTO and collaborating closely with product and research teams, this is a unique chance to take ownership across the stack and make a lasting impact in a company at the forefront of applied AI. The role is full-time, 5 days a week in their London office. London AI Start-up - Up to £120,000 + Shares + Private Healthcare + Pension - Were working with a well-funded AI start-up in London thats gearing up for huge growth. Theyre expecting to scale 10x over the next 18 months. The role - This isnt your standard engineering role youll be
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        They are looking for a Senior Software Engineer with strong Python expertise to join a high-impact programme, developing solutions that address complex operational challenges. If you're a Python engineer ready to step into a senior role, this could be the right move for you. Our client is a specialist technology consultancy delivering bespoke software and data solutions to government, defence, and critical national infrastructure sectors. * Design, develop, and test high-quality software solutions. * Proven commercial experience with Python and modern cloud technologies (AWS experience is a strong advantage). This is an opportunity to join a forward-looking team delivering software th
        They are looking for a Senior Software Engineer with strong Python expertise to join a high-impact programme, developing solutions that address complex operational challenges. If you're a Python engineer ready to step into a senior role, this could be the right move for you. Our client is a specialist technology consultancy delivering bespoke software and data solutions to government, defence, and critical national infrastructure sectors. * Design, develop, and test high-quality software solutions. * Proven commercial experience with Python and modern cloud technologies (AWS experience is a strong advantage). This is an opportunity to join a forward-looking team delivering software th
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        PREMIUM
        We placed a Senior FE Engineer and a Senior BE Engineer into this team over a year ago, and both are thriving. * A perfectionist developer who cares deeply about code quality - Up to £90,000 + Share Options - Remote (UK-based only) middle has partnered exclusively with one of the UKs most exciting early-stage start-ups. This is a greenfield opportunity to shape, build, and scale brand-new applications that help businesses make smarter financial decisions. Youll be joining them directly in build-mode solving real problems, shaping product direction, and bringing fresh ideas to life. This role is perfect for someone confident, collaborative, and commercially minded. Youll be part of a close-knit team where your input has real impact weighing up speed vs reward, delivering high-quality solutions, and helping to push the
        We placed a Senior FE Engineer and a Senior BE Engineer into this team over a year ago, and both are thriving. * A perfectionist developer who cares deeply about code quality - Up to £90,000 + Share Options - Remote (UK-based only) middle has partnered exclusively with one of the UKs most exciting early-stage start-ups. This is a greenfield opportunity to shape, build, and scale brand-new applications that help businesses make smarter financial decisions. Youll be joining them directly in build-mode solving real problems, shaping product direction, and bringing fresh ideas to life. This role is perfect for someone confident, collaborative, and commercially minded. Youll be part of a close-knit team where your input has real impact weighing up speed vs reward, delivering high-quality solutions, and helping to push the
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        Python Engineer

        McGregor Boyall Associates Limited
        EH1, Edinburgh
        Negotiable
        We're looking for an experienced Python Engineer with a strong understanding of AI/ML/ AWS, and commercial expertise in deploying AI systems using state-of-the-art machine learning libraries, cloud infrastructure, and modern Python-based tooling. * Strong Python 3.9+ skills with deep understanding of OOP, async/await, and debugging - 6-month contract (extensions highly likely) £480-£520 per day Outside ir35 - Remote contract * Building production-grade AI systems using LLMs, Object Detection, and OCR * Leveraging frameworks like Hugging Face Transformers, PyTorch, YOLO, OpenCV, and Pillow * Designing and deploying AI services via FastAPI, AWS Lambda, EKS/ECS, and S3 * Creating scalable data pipelines with Pandas, NumPy, SQLAlchemy, and Airflow * Supporting real-time model inference, edge deployments, and API integrati
        We're looking for an experienced Python Engineer with a strong understanding of AI/ML/ AWS, and commercial expertise in deploying AI systems using state-of-the-art machine learning libraries, cloud infrastructure, and modern Python-based tooling. * Strong Python 3.9+ skills with deep understanding of OOP, async/await, and debugging - 6-month contract (extensions highly likely) £480-£520 per day Outside ir35 - Remote contract * Building production-grade AI systems using LLMs, Object Detection, and OCR * Leveraging frameworks like Hugging Face Transformers, PyTorch, YOLO, OpenCV, and Pillow * Designing and deploying AI services via FastAPI, AWS Lambda, EKS/ECS, and S3 * Creating scalable data pipelines with Pandas, NumPy, SQLAlchemy, and Airflow * Supporting real-time model inference, edge deployments, and API integrati
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        They are looking for a Full Stack Developer Integrations & Support to join their multi-disciplinary team. Do you have solid full stack development experience across C#, SQL, and modern front-end frameworks? This is a hybrid role blending full stack development, integration work, and 3rd line support so you will need to be confident across the stack and enjoy solving problems directly for customers. Ludlow, Shropshire £45k - £50k - Hybrid role blending development, API integrations, and 3rd line support | C#, SQL, Razor, Angular/React | £45-50k | Shropshire (2 days in office) Confident building integrations and working with APIs, scripts, and enterprise systems? Looking for a hybrid role that combines hands-on development with 3rd line support? This could be the right
        They are looking for a Full Stack Developer Integrations & Support to join their multi-disciplinary team. Do you have solid full stack development experience across C#, SQL, and modern front-end frameworks? This is a hybrid role blending full stack development, integration work, and 3rd line support so you will need to be confident across the stack and enjoy solving problems directly for customers. Ludlow, Shropshire £45k - £50k - Hybrid role blending development, API integrations, and 3rd line support | C#, SQL, Razor, Angular/React | £45-50k | Shropshire (2 days in office) Confident building integrations and working with APIs, scripts, and enterprise systems? Looking for a hybrid role that combines hands-on development with 3rd line support? This could be the right
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        FEATURED
        My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Full Stack Developer, with Active Security Clearance (SC) * Expertise in a range of technologies, including Java (8, 11, 17+), Spring / Springboot, React / HTML - By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk - Up to £550 per day (Inside IR35) London / Remote - 3 months initially * AWS Cloud Service experience * Working experience with MySQL * Technical hands on experience with Terraform / Kibana / Apache Camel * Linux in a containerised environment * Immediate availability - If inter
        My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Full Stack Developer, with Active Security Clearance (SC) * Expertise in a range of technologies, including Java (8, 11, 17+), Spring / Springboot, React / HTML - By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk - Up to £550 per day (Inside IR35) London / Remote - 3 months initially * AWS Cloud Service experience * Working experience with MySQL * Technical hands on experience with Terraform / Kibana / Apache Camel * Linux in a containerised environment * Immediate availability - If inter
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        Frequently Asked Questions

        How many API jobs are there in Basildon?
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