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Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
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Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
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Job Title: Observability & Telemetry Engineer- Knutsford- 6 Months- £350 Per Day- Inside IR35 We're looking for a skilled Observability and Telemetry Engineer to support EaaS evolution efforts. You'll be instrumental in enhancing system monitoring and performance analysis. * Proficiency in PHP or Python * Solid understanding of Oracle and relational databases * Comfortable with both Linux and Windows environments * Hands-on experience with monitoring tools (e.g., AppDynamics, ITRS, Elastic APM, Grafana) * Experience with Angular, NodeJS * Knowledge of APIs, ETL processes, and scripting * Familiarity with Openshift, Docker, Kubernetes, and cloud technologies (IaaS, PaaS, SaaS) Start Date: ASAP Please apply promptly if you are interested as interviews will be commencing soon.
Job Title: Observability & Telemetry Engineer- Knutsford- 6 Months- £350 Per Day- Inside IR35 We're looking for a skilled Observability and Telemetry Engineer to support EaaS evolution efforts. You'll be instrumental in enhancing system monitoring and performance analysis. * Proficiency in PHP or Python * Solid understanding of Oracle and relational databases * Comfortable with both Linux and Windows environments * Hands-on experience with monitoring tools (e.g., AppDynamics, ITRS, Elastic APM, Grafana) * Experience with Angular, NodeJS * Knowledge of APIs, ETL processes, and scripting * Familiarity with Openshift, Docker, Kubernetes, and cloud technologies (IaaS, PaaS, SaaS) Start Date: ASAP Please apply promptly if you are interested as interviews will be commencing soon.
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Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
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Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
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Salesforce Administrator / Developer – Outside IR35 | On-site 5 days
Salesforce Administrator / Developer – Outside IR35 | On-site 5 days
Boost Talent Ltd
BD1, Bradford
From £300 to £350 per day
Contract Opportunity: Salesforce Administrator / Developer Outside IR35 | On-site 5 days per week - An established business is seeking an experienced Salesforce Administrator/Developer for the next phase of its Salesforce journey. The first part of the platform has been built the focus now is working directly with one of the business owners to integrate Salesforce across additional areas of the organisation and take the system to the next level, ensuring maximum value is delivered. * Enhance and expand existing Salesforce functionality. * Design, build, and optimise solutions using Apex, Visualforce, Lightning Components, and Flows. * Integrate Salesforce with third-party applications and internal systems (REST/SOAP APIs, middleware). * Maintain and improve workflows, processes, and data integrity. * Ensure security and compliance best practices are applied.
Contract Opportunity: Salesforce Administrator / Developer Outside IR35 | On-site 5 days per week - An established business is seeking an experienced Salesforce Administrator/Developer for the next phase of its Salesforce journey. The first part of the platform has been built the focus now is working directly with one of the business owners to integrate Salesforce across additional areas of the organisation and take the system to the next level, ensuring maximum value is delivered. * Enhance and expand existing Salesforce functionality. * Design, build, and optimise solutions using Apex, Visualforce, Lightning Components, and Flows. * Integrate Salesforce with third-party applications and internal systems (REST/SOAP APIs, middleware). * Maintain and improve workflows, processes, and data integrity. * Ensure security and compliance best practices are applied.
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Job title: Senior Software Engineer - Location: Full Remote (Very occasional travel to offices in Cheshire) Type: Contract / Outside IR35 / 6 months initial duration + possible renewals ---------- About the Role - We’re looking for Senior Software Engineers to join our client's dynamic Engineering team and play a key role in building high-quality, scalable software solutions. As a senior member of the team, you’ll take ownership of full-stack development, contribute to software architecture, drive engineering best practices, and mentor junior team members. You’ll work closely with Product Owners, Architects, and DevOps to ensure delivery excellence across a diverse range of projects. What You'll Be Doing - Software Development * Build and maintain applications using C#, .NET Core, .NET 4.x, and React.js * Develop robust frontend solutions using ASP.Net MVC, HTML5, CSS
Job title: Senior Software Engineer - Location: Full Remote (Very occasional travel to offices in Cheshire) Type: Contract / Outside IR35 / 6 months initial duration + possible renewals ---------- About the Role - We’re looking for Senior Software Engineers to join our client's dynamic Engineering team and play a key role in building high-quality, scalable software solutions. As a senior member of the team, you’ll take ownership of full-stack development, contribute to software architecture, drive engineering best practices, and mentor junior team members. You’ll work closely with Product Owners, Architects, and DevOps to ensure delivery excellence across a diverse range of projects. What You'll Be Doing - Software Development * Build and maintain applications using C#, .NET Core, .NET 4.x, and React.js * Develop robust frontend solutions using ASP.Net MVC, HTML5, CSS
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Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
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Understanding of data architecture and API design.
Understanding of data architecture and API design.
NEW
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Experience with MuleSoft and API Gateways.
Experience with MuleSoft and API Gateways.
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AWS DevOps Engineer, contract, remote (outside IR35)
AWS DevOps Engineer, contract, remote (outside IR35)
Staffworx Limited
EC1A, City of London
market rates, outside IR35, initial, likely long term extensions
AWS DevOps specialism (Lambda, API Gateway, Route 53, WAF, Shield, IAM, Cognito) * AWS API Gateway
AWS DevOps specialism (Lambda, API Gateway, Route 53, WAF, Shield, IAM, Cognito) * AWS API Gateway
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Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
PREMIUM
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Implement schema registries, data contracts, and API-first data governance.
Implement schema registries, data contracts, and API-first data governance.
NEWFEATURED
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REST API development
REST API development
NEW
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Conduct API testing with tools such as Postman, and validate data using SQL queries.
Conduct API testing with tools such as Postman, and validate data using SQL queries.
NEW
Conduct API testing with tools such as Postman, and validate data using SQL queries.
Conduct API testing with tools such as Postman, and validate data using SQL queries.
Familiarity with Jira, Confluence, Agile/Scrum, and REST API testing with Postman.
Familiarity with Jira, Confluence, Agile/Scrum, and REST API testing with Postman.
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API Development
API Development
FEATURED
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API gateway
API gateway
NEW
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API gateway
API gateway
PREMIUM
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Full Stack .NET Developer - Azure - Cardiff
Full Stack .NET Developer - Azure - Cardiff
Circle Group
CF1, Cardiff
£40000 - £50000 per annum + + Benefits
You should also have some development experience in the Cloud with Azure & third-party API integrations
You should also have some development experience in the Cloud with Azure & third-party API integrations
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Full Stack .NET Developer - Azure - Cardiff
Full Stack .NET Developer - Azure - Cardiff
Circle Group
CF1, Cardiff
£40000 - £50000 per annum + + Benefits
You should also have some development experience in the Cloud with Azure & third-party API integrations
You should also have some development experience in the Cloud with Azure & third-party API integrations
NEW
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Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
NEWFEATURED
We are looking for a Staff Software Engineer to join Datadog's API Platform group. This team owns the infrastructure and tooling behind our public API surface, which spans more than 7,000 endpoints and supports a vast range of customers and integrations. As a Staff Engineer, you will have the opportunity to contribute to a broad set of projects across multiple teams that support API routing, reliability, web frameworks, and large-scale automation. You will collaborate with teams that build and evolve internal frameworks, traffic shaping and routing logic, reliability tooling, and developer enablement for API infrastructure. * Lead technical direction across multiple teams spanning API routing, rate limiting, frameworks, reliability tooling, and infrastructure automation. * Help define
We are looking for a Staff Software Engineer to join Datadog's API Platform group. This team owns the infrastructure and tooling behind our public API surface, which spans more than 7,000 endpoints and supports a vast range of customers and integrations. As a Staff Engineer, you will have the opportunity to contribute to a broad set of projects across multiple teams that support API routing, reliability, web frameworks, and large-scale automation. You will collaborate with teams that build and evolve internal frameworks, traffic shaping and routing logic, reliability tooling, and developer enablement for API infrastructure. * Lead technical direction across multiple teams spanning API routing, rate limiting, frameworks, reliability tooling, and infrastructure automation. * Help define
Knowledge of API design and development best practices
Knowledge of API design and development best practices