26 to 50 of 54 API Development Jobs in the UK excluding London

team on an initial 3-6 month contract. Location: Belfast (Hybrid) Contract: 3-6 Months Daily Rate Essential Skills 5+ years of commercial Python development experience Previous experience within FinTech, Banking, Payments, or Financial Services Strong knowledge of Python and API development (FastAPI, Flask, or Django) Experience ...

API Developer (Golang/Python) - Financial Services Inside IR35 Sheffield (1-2 days/month onsite) A leading financial services organisation is seeking an experienced API Developer to join their team on a contract basis. This is a great opportunity to work on modern, scalable systems within … decisions and best practices Support performance optimisation and scalability initiatives Required Skills & Experience Strong experience with Golang (preferred) or Python Proven track record in API development (design, build, integration) Understanding of modern software engineering practices Nice to Have Experience with React or Node.js Working knowledge of Python ...

develop new functionality and make non-functional improvements to our products and services. Understand business requirements and how they translate into technical design and development projects and tasks. Participate in architectural and design discussions and diagnose and troubleshoot complex technical issues Work with stakeholders to progress and report … projects and tasks Building Voice Agents: Developing and maintaining our Go-based Voice Agent API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers Tool Creation: Developing "Tools" (Function Calling) that allow LLMs to interact with ...

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. ...

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 ...

BENEFITS £50-60k salary depending on experience Hybrid working - 4 days per week on-site, 1 day remote Modern technology stack and greenfield development opportunities Opportunity to mentor and lead a growing engineering team High level of ownership and influence across architecture and delivery Collaborative and ambitious engineering … .NET MAUI mobile applications - contributing from concept through to deployment. ESSENTIAL SKILLS Strong commercial experience with C#/.NET Modern .NET 8/10 development experience Blazor/Razor Components ASP.NET Core REST API development Entity Framework Core AWS infrastructure experience MySQL CI/CD pipelines using ...

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 ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

Azure CLI used regularly for automation, operational tasks, and reducing manual intervention. Azure Integration Services: proficient in Logic Apps, Service Bus, Event Grid, and API Management for integration design and implementation. API Development: solid experience with SOAP and REST APIs, including design, development, and secure management. … Summer event and 4 sponsored weekends a year. If you’re an Azure Cloud Engineer looking for a career defining opportunity with progression and development, then please drop Lee at MARS an application. MARS Recruitment is an equal opportunities employer and positively welcomes applications from suitably qualified applicants regardless ...

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 ...

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 ...

mature, integration-heavy environment-enhancing performance, improving reliability, and driving real business value through smart engineering. About the Role Delivering 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 and APIs … 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 ...

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 ...

Security Engineer - Hybrid role in Finance - Up to £100,000 The Role - Build and lead the AI Security Services function, including capability development, tooling and operating models. - Establish secure patterns for model development, deployment and monitoring. - Develop guardrails, detection capabilities and response playbooks for AI-related incidents … Required Skills & Experience - Strong programming and scripting skills specifically python and bash. - Strong knowledge of cloud technologies specifically AWS and Azure. - Strong knowledge of API development and security. - Good understanding/interest in data science methods. - Experience using Python or Power Shell - Proof of using AI for security ...

summary Provides strategic and operational leadership for the management, support, and development of specialist digital services within the 111 Digital Front End, acting as the senior product lead and escalation point while overseeing service performance, leading major project delivery and deployment, and shaping long-term development strategies … Welsh and/or English speakers are equally welcome to apply. Main duties of the job The post holder will lead the technical design, development and optimisation of the 111 Digital Front End, delivering scalable, high-performing digital and data engineering solutions. They will apply specialist expertise to shape ...

Dataverse • Supporting Power BI reporting and dashboards • Investigating and resolving technical issues • Supporting CRM-related functionality and integrations Required Skills: • .NET/.NET Core development experience • Power Platform experience or strong interest • SQL Server/T-SQL • API development • Umbraco CMS or similar platforms • Git version control ...

technical audiences Support adoption and continual improvement of automation best practices Essential Skills & Experience Strong knowledge of JavaScript (particularly for rules engine API development) Understanding of SQL for database queries Experience working with JSON data structures Rudimentary knowledge of Java , particularly for data type definitions within ODM tools ...

Your Skills and Experience Strong commercial experience building AI powered systems in production Experience with LLM frameworks, retrieval systems and agent workflows Full stack development experience, including React Strong system design and API development capability Product focused mindset with a focus on usability and impact Experience ...

software engineering experience, ideally in engineering or scientific software dealing with large data volumes for an expert userbase Awareness of security and compliance considerations API development, for internal boundaries and potentially external usage Being involved in ensuring operational success through monitoring/diagnostics and troubleshooting for deployments … continuous improvement Languages of interest include Python, C++ and C#. Software may be desktop or web + cloud. Mobile app development is not a primary focus. AI and ML techniques are likely working with numerical data or imaging rather than natural language/LLM. The role offers a highly ...

drive a massive roadmap spike for highly mature sales, marketing, and event analytics platforms. Your Toolkit Front-End Firepower: High proficiency in modern web development using the latest Angular (17/18) and TypeScript. Backend Mastery: Solid experience with API development, Object-Oriented Programming (OOP), and service ...

environments. Key Responsibilities Provide technical leadership and architectural guidance across Salesforce delivery teams Define platform architecture, integration patterns, standards, and engineering guardrails Lead the development of scalable Salesforce solutions across Service Cloud and Industry Cloud environments Drive engineering best practices including CI/CD, testing, automation, observability, and secure … design principles Support API and integration architecture across enterprise platforms Champion AI-enabled engineering practices and continuous improvement initiatives Ensure platform reliability, resilience, and performance optimisation Key Skills Required Strong Salesforce engineering experience within complex enterprise environments Deep expertise in Salesforce Service Cloud and Industry Cloud solutions Strong hands ...

initial 6 month contract. The selected candidate MUST HAVE CQRS experience and event-driven-architecture. Acts as the technical lead for backend development within a pod, specialising in event-driven architecture and CQRS-based systems. Core Skills:CQRS (non-negotiable), Event Sourcing, .NET/Java/Python, Azure Service … API Development, Distributed Systems Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more ...