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        34 Permanent API jobs in Slough + 20 miles

        Lead .Net Developer

        Halian Technology Limited
        Central London (W1)
        From £75,000 to £85,000 per annum Plus bonus and benfits
        Architect secure, high-performance API solutions using C#, .NET, and Azure. Ensure best practices in API design, security, and performance optimisation. Strong experience with RESTful API development and microservices architecture. Strong understanding of API security, authentication, and performance optimisation.
        Architect secure, high-performance API solutions using C#, .NET, and Azure. Ensure best practices in API design, security, and performance optimisation. Strong experience with RESTful API development and microservices architecture. Strong understanding of API security, authentication, and performance optimisation.
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        AI Architect

        DCV Technologies Limited
        North West London (NW1)
        From £125,000 to £165,000 per annum + Multiple Benefits
        Experience with Kubernetes, Docker, microservices, API integration
        Experience with Kubernetes, Docker, microservices, API integration
        FEATURED
        Experience with API management platforms (Apigee, Kong, OpenShift API Management) and Web Application Firewalls (WAF) is highly desirable. * Implement and manage API Management solutions and Web Application Firewalls (WAF). * Experience with API management (Apigee, Kong, OpenShift API Management) and API lifecycle.
        Experience with API management platforms (Apigee, Kong, OpenShift API Management) and Web Application Firewalls (WAF) is highly desirable. * Implement and manage API Management solutions and Web Application Firewalls (WAF). * Experience with API management (Apigee, Kong, OpenShift API Management) and API lifecycle.
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        FEATURED
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        more
        FEATURED
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        more
        FEATURED
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        Candidates should have proven leadership of engineering or platform delivery teams within a hosted platform, SaaS or data intensive services environment, experience delivering complex data platforms, web services or API driven applications at scale, and a strong understanding of technology operations including software development, DevOps, infrastructure and service management.
        more
        FEATURED

        Solutions Architect

        Lynx Recruitment Limited
        South West London (SW1V), SW1E 5LB
        From £60,000 to £80,000 per annum
        Lynx Recruitment are looking for an experienced Solution Architect to design and deliver modern, cloud-first digital services that support large-scale public sector transformation. This role is ideal for a Cloud or Solution Architect looking to expand into AI-led architecture, with greater exposure to data platforms, automation, and AI-driven capabilities. You will shape secure, scalable and user-focused solutions, working within multidisciplinary teams to translate business needs into pragmatic, sustainable technical architectures. Key Responsibilities * Design end-to-end cloud-native architectures across applications, data, integration, and platforms. * Translate business requirements into clear technical designs and architectural decisions. * Ensure solutions meet scalability, security, resilience, and performance requirements.
        Lynx Recruitment are looking for an experienced Solution Architect to design and deliver modern, cloud-first digital services that support large-scale public sector transformation. This role is ideal for a Cloud or Solution Architect looking to expand into AI-led architecture, with greater exposure to data platforms, automation, and AI-driven capabilities. You will shape secure, scalable and user-focused solutions, working within multidisciplinary teams to translate business needs into pragmatic, sustainable technical architectures. Key Responsibilities * Design end-to-end cloud-native architectures across applications, data, integration, and platforms. * Translate business requirements into clear technical designs and architectural decisions. * Ensure solutions meet scalability, security, resilience, and performance requirements.
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        Senior .Net Developer

        Halian Technology Limited
        Central London (W1)
        From £85,000 to £95,000 per annum Plus bonus and benefits
        Senior Backend Engineer (.NET Core) Fintech / Payments - We are looking for an experienced Senior Backend Engineer to join an engineering team building secure, scalable systems within the fintech space. This role is suited to a backend specialist with strong .NET Core experience who enjoys working on complex, high-throughput platforms where performance, reliability, and security are essential. You will contribute to the design and evolution of backend services, work on distributed systems, and help maintain high engineering standards across the team. Key Responsibilities * Design, develop, and maintain secure, high-performance backend services using.NET Core * Build, evolve, and maintain RESTful APIs * Contribute to microservices-based and distributed system architectures * Work across both greenfield and existing systems with a focus on scalability and maintainability
        Senior Backend Engineer (.NET Core) Fintech / Payments - We are looking for an experienced Senior Backend Engineer to join an engineering team building secure, scalable systems within the fintech space. This role is suited to a backend specialist with strong .NET Core experience who enjoys working on complex, high-throughput platforms where performance, reliability, and security are essential. You will contribute to the design and evolution of backend services, work on distributed systems, and help maintain high engineering standards across the team. Key Responsibilities * Design, develop, and maintain secure, high-performance backend services using.NET Core * Build, evolve, and maintain RESTful APIs * Contribute to microservices-based and distributed system architectures * Work across both greenfield and existing systems with a focus on scalability and maintainability
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        Full Stack Engineer

        Halian Technology Limited
        Reading (RG1)
        Up to £100,000 per annum
        Were seeking a talented Full Stack Engineer to help build and scale innovative web applications. If you enjoy working across the full stack and delivering high-performance solutions, this is your opportunity to make a real impact. Location: Reading (2 days a week) * Modern, responsive web applications using React & TypeScript. * Sleek UIs with Tailwind CSS and cutting-edge frontend architecture. * Backend services with Ruby on Rails (essential) or Node.js, integrated via RESTful APIs. * Robust data solutions with PostgreSQL or similar databases. * Scalable deployment pipelines on cloud platforms with full CI/CD workflows. * Automated testing across frontend and backend to ensure reliability and performance. * Optimized client-side performance for smooth user experiences. * Strong commercial experience with React & TypeScript. * Deep expertise in Ruby on Rails (essential).
        Were seeking a talented Full Stack Engineer to help build and scale innovative web applications. If you enjoy working across the full stack and delivering high-performance solutions, this is your opportunity to make a real impact. Location: Reading (2 days a week) * Modern, responsive web applications using React & TypeScript. * Sleek UIs with Tailwind CSS and cutting-edge frontend architecture. * Backend services with Ruby on Rails (essential) or Node.js, integrated via RESTful APIs. * Robust data solutions with PostgreSQL or similar databases. * Scalable deployment pipelines on cloud platforms with full CI/CD workflows. * Automated testing across frontend and backend to ensure reliability and performance. * Optimized client-side performance for smooth user experiences. * Strong commercial experience with React & TypeScript. * Deep expertise in Ruby on Rails (essential).
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        Job Title: Retailer Systems Project Consultant - Location: Hybrid, 2 days in the office (Farnborough) Salary: Competitive + Performance Bonus - Job type: Full time, Permanent - Working Hours: 40 Hours Per Week - Application Deadline: 3rd April 2026 - The Retailer Systems Project Consultant is responsible for supporting, coordinating, and delivering sales and CRM projects within our client's Network Digitalisation department. These projects will primarily focus on providing state of the art systems for the wider Retailer Network. This role ensures that initiatives are completed on time, within budget, and to the desired quality standards, whilst aligning with strategic business objectives. The Project Consultant will be actively involved in the planning, testing, execution and deployment of new retailer systems, upgrades, and technology rollouts, working collaboratively with ...
        Job Title: Retailer Systems Project Consultant - Location: Hybrid, 2 days in the office (Farnborough) Salary: Competitive + Performance Bonus - Job type: Full time, Permanent - Working Hours: 40 Hours Per Week - Application Deadline: 3rd April 2026 - The Retailer Systems Project Consultant is responsible for supporting, coordinating, and delivering sales and CRM projects within our client's Network Digitalisation department. These projects will primarily focus on providing state of the art systems for the wider Retailer Network. This role ensures that initiatives are completed on time, within budget, and to the desired quality standards, whilst aligning with strategic business objectives. The Project Consultant will be actively involved in the planning, testing, execution and deployment of new retailer systems, upgrades, and technology rollouts, working collaboratively with ...
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        PREMIUM

        Machine Learning Engineer

        Halian Technology Limited
        New Town, Reading (RG1), RG1
        From £60,000 to £90,000 per annum
        JOB- Machine Learning Engineer - LOCATION- Reading - TERM- Permanent - SALARY- £60,000 to £90,000 per annum (plus benefits) My client is a technology-focused organisation developing advanced AI and data-driven solutions across a range of industries. They are looking to expand their technical team by hiring a Machine Learning Engineer to support the development and deployment of intelligent systems from their offices in Reading. Knowledge / experience in Machine Learning, Artificial Intelligence, or Data Science - A degree qualification (BSc, MSc, PhD etc.) in Computer Science, Data Science, Mathematics, Statistics, Artificial Intelligence or similar - Strong programming skills in Python - Experience with machine learning libraries such as TensorFlow, PyTorch, or Scikit-learn - Experience working with large datasets and building data pipelines
        JOB- Machine Learning Engineer - LOCATION- Reading - TERM- Permanent - SALARY- £60,000 to £90,000 per annum (plus benefits) My client is a technology-focused organisation developing advanced AI and data-driven solutions across a range of industries. They are looking to expand their technical team by hiring a Machine Learning Engineer to support the development and deployment of intelligent systems from their offices in Reading. Knowledge / experience in Machine Learning, Artificial Intelligence, or Data Science - A degree qualification (BSc, MSc, PhD etc.) in Computer Science, Data Science, Mathematics, Statistics, Artificial Intelligence or similar - Strong programming skills in Python - Experience with machine learning libraries such as TensorFlow, PyTorch, or Scikit-learn - Experience working with large datasets and building data pipelines
        more

        Software Engineering Manager

        Halian Technology Limited
        Central London (W1)
        From £120,000 to £130,000 per annum Plus bonus and benefits
        EngineeringManager/SeniorEngineeringManager - Location:Hybrid(3daysperweekin-office) Company:LeadingPaymentsCompany(FinTech) Myclientisahigh-growth,product ledpaymentscompanyoperatingattheforefrontofthefintechecosystem. Theirplatformpowerssecure,scalable,andreliabletransactionsforbusinessesglobally,processingmillionsofpaymentsdailywithastrongfocusoncompliance,resilience,andperformance. Astheycontinuetoscale,wearelookingforanEngineeringManager/SeniorEngineeringManagertoleadhigh-performingteamsbuildingmission-criticalpaymentsinfrastructureandcustomer-facingfinancialproducts. TheRole - Thisisahands-offbuthighlytechnicalleadershiprole. Youwillnotbecodingday-today,butyouwillremainclosetothearchitecture,technicaldecisions,andengineeringquality. Youwillleadateamoftalentedengineersdeliveringsecure,compliant,andscalablepaymentsystemsinaregulatedenvironment.
        EngineeringManager/SeniorEngineeringManager - Location:Hybrid(3daysperweekin-office) Company:LeadingPaymentsCompany(FinTech) Myclientisahigh-growth,product ledpaymentscompanyoperatingattheforefrontofthefintechecosystem. Theirplatformpowerssecure,scalable,andreliabletransactionsforbusinessesglobally,processingmillionsofpaymentsdailywithastrongfocusoncompliance,resilience,andperformance. Astheycontinuetoscale,wearelookingforanEngineeringManager/SeniorEngineeringManagertoleadhigh-performingteamsbuildingmission-criticalpaymentsinfrastructureandcustomer-facingfinancialproducts. TheRole - Thisisahands-offbuthighlytechnicalleadershiprole. Youwillnotbecodingday-today,butyouwillremainclosetothearchitecture,technicaldecisions,andengineeringquality. Youwillleadateamoftalentedengineersdeliveringsecure,compliant,andscalablepaymentsystemsinaregulatedenvironment.
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        AI Engineer

        Halian Technology Limited
        West London (W2), W2 2DT
        Up to £85,000 per annum
        Location: London (Hybrid) Salary: Competitive + Benefits - Halian are representing a leading UK digital publishing organisation is seeking an AI Engineer to drive AI innovation across editorial, commercial, and product teams. This is a newly created opportunity to play a pivotal role in shaping how artificial intelligence is embedded into a large-scale newsroom and digital media environment. You will work cross-functionally to identify high-impact use cases and design practical, scalable AI solutions that improve efficiency, engagement, and decision-making. The Role * Design, prototype, and deploy AI-driven tools to enhance newsroom and business workflows * Develop prompt-engineered generative AI applications for summarisation, tagging, research support, and operational efficiency * Build and test AI agents and automation workflows to streamline repetitive processes
        Location: London (Hybrid) Salary: Competitive + Benefits - Halian are representing a leading UK digital publishing organisation is seeking an AI Engineer to drive AI innovation across editorial, commercial, and product teams. This is a newly created opportunity to play a pivotal role in shaping how artificial intelligence is embedded into a large-scale newsroom and digital media environment. You will work cross-functionally to identify high-impact use cases and design practical, scalable AI solutions that improve efficiency, engagement, and decision-making. The Role * Design, prototype, and deploy AI-driven tools to enhance newsroom and business workflows * Develop prompt-engineered generative AI applications for summarisation, tagging, research support, and operational efficiency * Build and test AI agents and automation workflows to streamline repetitive processes
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        Full Stack Developer

        167 Solutions Ltd
        Central London (W1)
        From £75,000 to £100,000 per annum
        Forward Deployment Engineer UK (Hybrid) Salary: £70,000 £100,000 + Benefits | Permanent | Hiring 10 Engineers - We are hiring Forward Deployment Engineers to deliver and deploy cutting-edge technology solutions for our clients. You will work directly with customers, implement systems, troubleshoot issues, and ensure solutions work in real-world environments. * Deploy and configure software solutions in client environments * Integrate systems across cloud, APIs, and data pipelines * Troubleshoot and resolve technical issues on-site or remotely * Collaborate with product and engineering teams to improve deployments * Support rollout projects and large-scale implementations * Strong software engineering skills (Python, JavaScript, or similar) * Experience with cloud platforms (AWS, Azure, GCP) * Knowledge of APIs, system integration, and microservices
        Forward Deployment Engineer UK (Hybrid) Salary: £70,000 £100,000 + Benefits | Permanent | Hiring 10 Engineers - We are hiring Forward Deployment Engineers to deliver and deploy cutting-edge technology solutions for our clients. You will work directly with customers, implement systems, troubleshoot issues, and ensure solutions work in real-world environments. * Deploy and configure software solutions in client environments * Integrate systems across cloud, APIs, and data pipelines * Troubleshoot and resolve technical issues on-site or remotely * Collaborate with product and engineering teams to improve deployments * Support rollout projects and large-scale implementations * Strong software engineering skills (Python, JavaScript, or similar) * Experience with cloud platforms (AWS, Azure, GCP) * Knowledge of APIs, system integration, and microservices
        more

        Lead PHP Developer

        Comtecs
        West London (W4)
        From £130,000 to £150,000 per annum +Bonus +Benefits
        Permanent, London (Hybrid 2/3), £130k - £150k (On Experience) +Benefits - Working on both internal systems integrating with 3rd party systems as well as customer facing web-based systems built in PHP and associated frameworks, you will lead development initiatives within the full life cycle. * Work with both Project Managers and Data Scientists to define, manage and deliver projects * Play a lead role in the architecture and design of web-based systems * Develop code within the full life cycle: Development>Testing>Deployment>Refactor * Develop integrations with internal and external system via APIs * Undertake code reviews across PHP, Laravel, Symfony, CodeIgniter, Go/Golang (to a lesser degree), SQL/MySQL, HTML, CSS and Javascript (inc React.js and Vue.js) * Architect, build, and deploy scalable, cloud-native, AI-powered data-driven products in AWS
        Permanent, London (Hybrid 2/3), £130k - £150k (On Experience) +Benefits - Working on both internal systems integrating with 3rd party systems as well as customer facing web-based systems built in PHP and associated frameworks, you will lead development initiatives within the full life cycle. * Work with both Project Managers and Data Scientists to define, manage and deliver projects * Play a lead role in the architecture and design of web-based systems * Develop code within the full life cycle: Development>Testing>Deployment>Refactor * Develop integrations with internal and external system via APIs * Undertake code reviews across PHP, Laravel, Symfony, CodeIgniter, Go/Golang (to a lesser degree), SQL/MySQL, HTML, CSS and Javascript (inc React.js and Vue.js) * Architect, build, and deploy scalable, cloud-native, AI-powered data-driven products in AWS
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        QA Engineer – Mobile Apps / Test Automation

        Intelligent Talent Solutions Ltd
        Bracknell (RG12)
        From £55,000 to £75,000 per annum Pension, staff discounts, medical
        QA Engineer Mobile Apps & Automation - Hybrid Working 3 Days Office | Bracknell Area - Are you passionate about building high-quality mobile applications that genuinely improve peoples health and wellbeing? Were partnering with an innovative medical technology company developing digital products and connected mobile applications used by customers worldwide. Theyre looking for a Quality Engineer with strong mobile testing and automation experience to help ensure their digital health platforms remain reliable, secure and safe for real-world use. Youll play a key role testing iOS and Android applications, cloud APIs and backend services, ensuring new releases meet the highest quality and regulatory standards. The Opportunity - Working closely with software engineers, business analysts, product teams and regulatory specialists, youll be responsible for ensuring mobile and cloud ...
        QA Engineer Mobile Apps & Automation - Hybrid Working 3 Days Office | Bracknell Area - Are you passionate about building high-quality mobile applications that genuinely improve peoples health and wellbeing? Were partnering with an innovative medical technology company developing digital products and connected mobile applications used by customers worldwide. Theyre looking for a Quality Engineer with strong mobile testing and automation experience to help ensure their digital health platforms remain reliable, secure and safe for real-world use. Youll play a key role testing iOS and Android applications, cloud APIs and backend services, ensuring new releases meet the highest quality and regulatory standards. The Opportunity - Working closely with software engineers, business analysts, product teams and regulatory specialists, youll be responsible for ensuring mobile and cloud ...
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        Frequently Asked Questions

        How many permanent API jobs are there in Slough?
        There are 34 permanent API jobs within 20 miles of Slough available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Slough?
        As well as permanent API jobs in Slough, you can find permanent IT, Software Development, Architecture, amongst many others.