51 to 75 of 101 Permanent API Development Jobs

System Developer

Hiring Organisation
Eligo Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
join our engineering team. This role offers the opportunity to work on scalable systems, modern applications, and cloud-based infrastructure while contributing to the development of innovative digital products and services. As part of a collaborative Agile team, you will work closely with engineers, product managers, designers, and other … technical design, architecture, and solution planning activities. Collaborate with cross-functional teams to deliver projects and product enhancements. Troubleshoot, diagnose, and resolve issues across development and production environments. Promote high standards of code quality, testing, and engineering best practice. Participate in Agile ceremonies and contribute to continuous improvement initiatives. ...

System Developer

Hiring Organisation
Eligo Recruitment Ltd
Location
Borough, Leicester Square, Greater London, United Kingdom
Employment Type
Permanent
Salary
£70000 - £75000/annum
join our engineering team. This role offers the opportunity to work on scalable systems, modern applications, and cloud-based infrastructure while contributing to the development of innovative digital products and services. As part of a collaborative Agile team, you will work closely with engineers, product managers, designers, and other … technical design, architecture, and solution planning activities. Collaborate with cross-functional teams to deliver projects and product enhancements. Troubleshoot, diagnose, and resolve issues across development and production environments. Promote high standards of code quality, testing, and engineering best practice. Participate in Agile ceremonies and contribute to continuous improvement initiatives. ...

Software Developer (SC Cleared)

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Permanent
Salary
GBP 60,000 - 70,000 Annual
seeking Software Engineers and Senior Software Engineers to support the delivery of secure, scalable, and resilient digital services. You will contribute to the design, development, testing, and deployment of software solutions while collaborating with multidisciplinary teams in an agile environment. Senior Software Engineers will also provide technical leadership, guide … technical discussions. Implement robust, scalable, and maintainable code. Collaborate with product managers, architects, and engineers. Support testing, deployment, and operational activities. Follow secure software development and DevOps practices. Contribute to continuous improvement initiatives. Additional Responsibilities for Senior Software Engineers Lead technical design and architecture discussions. Establish engineering standards ...

Lead Software Engineer

Hiring Organisation
Masson Appointments
Location
Gatwick, West Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£85,000
production systems and own their reliability Tech Stack Skills: Language: C# on .NET (primary, and what youll write every day) Frameworks: ASP.NET Core (Web API), Azure Functions (isolated worker) Database: SQL Server, accessed via Entity Framework Core and/or Dapper (youll write queries, design schemas, and optimise performance … foundation . The Azure-specific skills can be learned on the job. Requirements: You Must Have 7+ years professional software development experience, primarily in C#/.NET, including time leading, mentoring, or coaching other engineers People leadership: youve coached, mentored, or line-managed developers, and you get satisfaction from ...

.Net Engineer

Hiring Organisation
Canada Life
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
solutions providing market-leading services for our colleagues, customers and advisers. What you'll do The Engineer is responsible for the design and development of strategic software solutions, ensuring that requirements are met, best practices are followed and that all software developed is of a high quality and robust … nature. Working with Project Managers, Product Owners, Architects, Business Analysts and Testers the successful .Net Engineer will share responsibility for project feasibility, requirements, design, development, quality and delivery. They will need to work positively and effectively within teams of mixed abilities and experience and be adaptable within changing environments. ...

Lead AI Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Agentic AI tooling and orchestration frameworks LangChain/LangGraph PyTorch and ML libraries REST APIs Docker and containerisation CI/CD pipelines Git-based development workflows What we're looking for 4-6 years' experience within Software Engineering, AI Engineering, or Machine Learning Engineering roles Strong hands-on Python … engineering practices Exposure to Agentic AI frameworks or autonomous AI workflows Experience working with Azure and Databricks Good understanding of backend engineering and API development Experience collaborating across cross-functional engineering and product teams Ability to mentor or support junior engineers Strong communication and problem-solving skills Package ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
/.NET, TypeScript or C++. Strong AWS and cloud-native engineering experience. Experience with Docker, Kubernetes and event-driven architectures. Strong backend engineering and API development experience. Experience building scalable distributed systems. Strong engineering mindset with a passion for modern technologies and AI tooling. Highly Desirable Commodity trading ...

Backend Engineer (Monitoring)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
robust error handling, retry logic, and graceful degradation strategies Monitor system performance and optimize bottlenecks to ensure sub-second latency for critical monitoring operations API Development Develop secure, well-documented RESTful APIs that allow users to integrate our monitoring tools into their workflows Implement authentication, authorization, and rate … protect users data and ensure fair resource usage Build webhook systems and real-time notification services to alert users about critical safety events Design API interfaces that are intuitive for developers while remaining flexible for diverse user use cases Design and implement integrations with Security Information and Event Management ...

Principal Engineer (Payments)

Hiring Organisation
Intec Select Ltd
Location
Wolverhampton, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£90000 - £115000/annum Hybrid + 25% bonus
Principal Engineer (Payments) Our long-term trusted partner, a leading financial services corporation, is hiring a Principal Engineer to drive the development and design of several greenfield retail banking platforms as our client continues on their digital transformation journey. This is a senior leadership position where the chosen engineer … product roadmaps, focus on architectural challenges, and provide hands-on technical leadership to a team of engineers. Your responsibilities will include: Lead the development and implementation of a modern cloud foundation and data platform that is robust, scalable, fully automated, secure, and can support the growth of the business. ...

Principal Engineer (Payments)

Hiring Organisation
Intec Select Ltd
Location
London, Fitzrovia, United Kingdom
Employment Type
Permanent
Salary
£90000 - £115000/annum Hybrid + 25% bonus
Principal Engineer (Payments) Our long-term trusted partner, a leading financial services corporation, is hiring a Principal Engineer to drive the development and design of several greenfield retail banking platforms as our clients rebuild their product portfolio as they continue on their digitial transformation journey. This is a senior … product roadmaps, focus on architectural challenges, and provide hands-on technical leadership to a team of engineers. Your responsibilities will include: Lead the development and implementation of a modern cloud foundation and data platform that is robust, scalable, fully automated, secure, and can support the growth of the business. ...

Senior Data Scientist - Biostatistics

Hiring Organisation
develop
Location
London, UK
life sciences and pharmaceutical organisations modernise and scale their statistical modelling capabilities. This role combines statistical expertise with modern data engineering practices, enabling the development of robust, reproducible, and production-ready analytical solutions. You'll work closely with biostatisticians, data scientists, and technical stakeholders to improve modelling approaches … complex statistical concepts into practical business and technical solutions Skills & Experience Essential Strong statistical background, ideally within Biostatistics Advanced R programming skills, including package development Experience with Git and collaborative development workflows Knowledge of CI/CD pipelines, automated testing, and software engineering best practices Strong understanding ...

Senior Data Scientist - Biostatistics

Hiring Organisation
Develop
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80,000
life sciences and pharmaceutical organisations modernise and scale their statistical modelling capabilities. This role combines statistical expertise with modern data engineering practices, enabling the development of robust, reproducible, and production-ready analytical solutions. You'll work closely with biostatisticians, data scientists, and technical stakeholders to improve modelling approaches … complex statistical concepts into practical business and technical solutions Skills & Experience Essential Strong statistical background, ideally within Biostatistics Advanced R programming skills, including package development Experience with Git and collaborative development workflows Knowledge of CI/CD pipelines, automated testing, and software engineering best practices Strong understanding ...

Senior Data Scientist - Biostatistics

Hiring Organisation
develop
Location
City of London, Greater London, UK
life sciences and pharmaceutical organisations modernise and scale their statistical modelling capabilities. This role combines statistical expertise with modern data engineering practices, enabling the development of robust, reproducible, and production-ready analytical solutions. You'll work closely with biostatisticians, data scientists, and technical stakeholders to improve modelling approaches … complex statistical concepts into practical business and technical solutions Skills & Experience Essential Strong statistical background, ideally within Biostatistics Advanced R programming skills, including package development Experience with Git and collaborative development workflows Knowledge of CI/CD pipelines, automated testing, and software engineering best practices Strong understanding ...

Senior AI Engineer Manager/Associate Director | Capital Markets

Hiring Organisation
Datatech
Location
London, United Kingdom
Employment Type
Permanent
Applied AI engineering, ML engineering or software engineering background · Experience with LLMs, RAG, embeddings, prompt engineering or fine tuning · Exposure to LangChain, LangGraph, Agent Development Kit or similar agent frameworks · Experience with vector databases such as Pinecone, Chroma or similar · API development experience, ideally with FastAPI ...

Applications Developer

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
play a key part in enhancing existing systems, building new solutions, and driving innovation across the firm's application landscape. The position combines .NET development, SharePoint expertise, and modern front-end technologies , working closely with technical and business stakeholders to deliver scalable, user-focused solutions. Key Responsibilities Analyse business … third-party services Troubleshoot and resolve technical issues across supported platforms Provide user support and training where required Contribute to continuous improvement of development processes and tools Work closely with stakeholders across the business to deliver high-quality solutions Support occasional out-of-hours maintenance to ensure system stability ...

Senior Generative AI Engineer

Hiring Organisation
Capgemini
Location
Greater London, United Kingdom
Employment Type
Full Time
time. Your Role: Implement and finetune generative AI models under the guidance of senior team members Contribute to prompt engineering and development of Ai powered workflows Assist with the deployment monitoring and maintenance of AI models in production environments Collaborate with data scientists and engineers to ensure seamless integration … capabilities Perform data preprocessing feature engineering and API development for AI applications Participate in code reviews testing and documentation to ensure quality and reliability Stay updated with advancements in GenAI and share relevant learnings with the team You will lead the development of data pipelines, vector databases ...

Java Software Engineer

Hiring Organisation
Amber Labs
Location
London, UK
delivery team building and enhancing cloud-native backend services within a modern enterprise environment. Role Overview The successful candidate will contribute to the design, development, and support of Java-based applications using Spring Boot and AWS , working as part of an Agile, multidisciplinary team. Alongside strong backend engineering skills … capability, enabling engineers to interrogate data and support business reporting requirements. This is a hands-on software engineering role with opportunities to contribute to API development, cloud-native architectures, and modern DevOps practices. Key Responsibilities Develop and maintain Java-based backend applications using Spring Boot Design and implement ...

Java Software Engineer

Hiring Organisation
Amber Labs
Location
City of London, Greater London, UK
delivery team building and enhancing cloud-native backend services within a modern enterprise environment. Role Overview The successful candidate will contribute to the design, development, and support of Java-based applications using Spring Boot and AWS , working as part of an Agile, multidisciplinary team. Alongside strong backend engineering skills … capability, enabling engineers to interrogate data and support business reporting requirements. This is a hands-on software engineering role with opportunities to contribute to API development, cloud-native architectures, and modern DevOps practices. Key Responsibilities Develop and maintain Java-based backend applications using Spring Boot Design and implement ...

Java Software Engineer

Hiring Organisation
Amber Labs
Location
City of London, London, United Kingdom
delivery team building and enhancing cloud-native backend services within a modern enterprise environment. Role Overview The successful candidate will contribute to the design, development, and support of Java-based applications using Spring Boot and AWS , working as part of an Agile, multidisciplinary team. Alongside strong backend engineering skills … capability, enabling engineers to interrogate data and support business reporting requirements. This is a hands-on software engineering role with opportunities to contribute to API development, cloud-native architectures, and modern DevOps practices. Key Responsibilities Develop and maintain Java-based backend applications using Spring Boot Design and implement ...

Modern Embedded C++ Software Engineer – Computer Vision

Hiring Organisation
Standard 8
Location
Farnborough, Hampshire, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 per annum
job. You'll work within embedded Linux environments, support build and release processes, contribute to automated testing, and help improve how software moves from development into production. You'll work closely with the hardware and algorithm teams, helping bring new capability into products already deployed in demanding operational environments. … particularly Jenkins or similar Solid grounding in software architecture and testing practice Comfortable working independently, without hand-holding Nice to Have Docker or containerised development environments Networking protocols and low-level hardware interfaces API development, including GraphQL Python/C++ integration, e.g. pybind11 If you want ...

Full Stack Developer & Automation Specialist

Hiring Organisation
Service Service Employment Agency Limited
Location
Norwich, Norfolk, UK
Employment Type
Full-time
This isn't your standard, repetitive coding job. You will be working on a unique mix of backend data systems, cutting-edge AI integrations, API development, and frontend web optimization. The ideal candidate is a problem solver who understands databases, loves connecting different systems together, and actively uses … journeys. Key Skills & Requirements The Must-Haves (Core Stack): SQL & Databases: Strong experience writing queries, managing relational databases, and handling data migration/cleansing. API Integration: Solid understanding of REST/SOAP APIs, webhooks, and data serialization (JSON/XML). AI Savvy: Active and proficient user ...

Full Stack Developer & Automation Specialist

Hiring Organisation
Service Service
Location
Hellesdon, Norfolk, United Kingdom
Employment Type
Permanent
Salary
£50000 - £75000/annum
This isn't your standard, repetitive coding job. You will be working on a unique mix of backend data systems, cutting-edge AI integrations, API development, and frontend web optimization. The ideal candidate is a problem solver who understands databases, loves connecting different systems together, and actively uses … journeys. Key Skills & Requirements The Must-Haves (Core Stack): SQL & Databases: Strong experience writing queries, managing relational databases, and handling data migration/cleansing. API Integration: Solid understanding of REST/SOAP APIs, webhooks, and data serialization (JSON/XML). AI Savvy: Active and proficient user ...

Technical Architect - Pre-sales

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
client data will be sourced, validated, and integrated into Mondra, leveraging where possible our existing Import and Export APIs and identifying where custom API development may be required for fulfil Mondra’s data requirements. You will also contribute to the client contracting process, ensuring technical commitments are clearly … including mapping data sources, transformation logic, and validation processes. Identify the client’s BI requirements, and define data export strategies (preferably via existing Mondra API). Identify the authentication/authorisation capabilities of the client, and promote the integration with Mondra’s Identity Provider via Single Sign On. Leverage ...

Senior Azure AI Platform Engineer | Azure AI Foundry | C# | APIs

Hiring Organisation
Intelligent Talent Solutions Ltd
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
serverless services Develop and support MCP Servers and AI integration services Design event-driven architectures using Azure Service Bus Manage APIs through Azure API Management Expose AI capabilities through secure, auditable APIs and reusable services Support Copilot Studio and AI-enabled workflows Monitor and optimise AI and integration services … using Azure Monitor and Application Insights Work closely with business stakeholders to translate operational challenges into AI-enabled solutions Essential Experience C# and .NET development Azure API Management (APIM) Azure Functions Azure Service Bus REST API design and development Azure AI Foundry Azure OpenAI Event-driven ...

Senior Dynamics Developer

Hiring Organisation
Head Resourcing
Location
Glasgow, UK
Employment Type
Full-time
ownership of a mature, integration-heavy environment-enhancing performance, improving reliability, and driving real business value through smart engineering. About the RoleDelivering hands-on development across Dynamics 365 & Dataverse (plugins, APIs, customisations, Power Platform). Responsibilities Owning end-to-end data flows - from upstream ingestion through to downstream reporting … Collaborating with product, data, integration and business teams to deliver high-quality solutions Qualifications Strong experience with Dynamics 365 CE/CRM and Dataverse development Solid coding background in C#/.NET, JavaScript/TypeScript, and API development Proven ability to work in integration-heavy environments (Azure ...