51 to 75 of 94 API Development Jobs in the UK

financial markets environment. This is a true player-coach role - leading a high-performing Agile team while remaining actively involved in architecture, design, and development of distributed, cloud-native systems supporting Rates & FX platforms. Key Skills Required: Strong C#/.NET Core expertise Experience with distributed, event-driven, cloud … native architectures REST/GraphQL API development AWS or Azure cloud deployment Relational databases (MSSQL/MySQL) Proven experience leading engineering teams in Agile environments Exposure to trading systems, FIX protocol, WPF, microservices, or serverless architecture is highly desirable. If you're a delivery-focused technical leader ...

part of a cross-functional team responsible for designing, building, and evolving high-quality digital products. You'll contribute across the full development lifecycle, with a strong focus on backend services, APIs, cloud infrastructure, and performance - while continuing to grow your technical depth in a supportive engineering culture. What … engineering standards, knowledge sharing, and continuous improvement What we're looking for Experience building web applications using a modern backend stack Strong fundamentals in API development and relational databases Hands-on experience with .NET Core, C#, TypeScript , and React Exposure to cloud platforms and Infrastructure as Code Familiarity ...

seeking a highly skilled and innovative Agentic AI Engineer to join our team and drive the development and deployment of cutting-edge generative AI solutions within the Microsoft ecosystem . This position is well-suited for candidates with a background in software engineering, data science, or machine learning … applications utilizing Microsoft platforms such as M365, Copilot Studio, and Azure AI Foundry, and have at least one year of relevant experience. Strong software development background with proficiency in Python. Experience with API development using FastAPI, Flask, or Django. Knowledge of Docker and containerized deployments. Hands ...

both languages. Technologies PHP/Laravel JavaScript/Typescript (React/Express) SQL and MongoDB. Docker Git Linux/WSL Microservices Agile (Scrum) methodology, API development Salary is up to £30K for this role. Benefits include hybrid working (after probation period), flexible working, 20 days holiday +BH, pension ...

access control, logging, and data protection Strong consulting, communication, and leadership skills Passion for learning and applying emerging technologies Desirable Python engineering experience and API development Experience with data pipelines and vector databases Knowledge of SRE, DevOps, and platform engineering practices Exposure to AI systems, LLMs ...

Fluent UI Backend & Cloud ASP.NET Core (C#) or Node.js Azure Functions and/or Azure App Service Azure SignalR or WebSockets Microsoft Graph API (Teams, users, meetings) Architecture & Concepts Real-time systems Role-based identity and permissions Secure enterprise authentication High-availability, fault-tolerant design What We’re Looking … Essential Proven experience building custom Microsoft Teams applications Strong Microsoft 365 and Azure experience Solid React and TypeScript skills Backend API development experience (C#/.NET or Node.js) Experience with real-time communication patterns Strong enterprise UX mindset — clear, accessible, and foolproof Ability to work with platform constraints ...

value autonomy, speed, and impact. Stack: Build with modern tools — Python, FastAPI, TypeScript, LLMs, MLOps What We’re Looking For 2+ years of software development experience Proven track record of building and shipping full-stack products in fast-paced, product-driven teams Hands-on experience building production AI systems … etc.), integrated into real user workflows Familiarity with MLOps tools and CI/CD for both traditional and ML-driven systems Strong backend and API development skills - comfortable owning systems end-to-end, from data pipelines to user-facing interfaces Passion for building clean, usable products that solve ...

pipelines supporting real-time and batch processing for AI agents. Contribute to the technical implementation of agent systems using frameworks such as Google AI Development Kit (ADK) or comparable technologies. Develop and maintain client libraries for secure collaboration between data systems, agents, and internal platforms. Implement data-centric agent … patterns and integrate agents with existing enterprise systems. Conduct continuous testing and validation of data integrations and pipelines throughout the development lifecycle. Incorporate feedback loops to ensure data quality, system reliability, and operational scalability. Professional Experience 5–7 years of experience as a Software Engineer or Data Engineer. Minimum ...

Senior Backend Engineer/Head of Backend Development (Python/AWS) Fintech | NYC (Remote) | No C2C | Full-time role Compensation : £100,000–£160,000 (negotiable for star talent upon tech test) We are working with a well-funded fintech platform transforming how complex financial data flows across global markets. … tier-one financial institutions. You will primarily work in Python and AWS, building robust APIs and scalable data pipelines. This is not simply CRUD API development; it involves architecting high-trust systems with strong multi-tenant boundaries, regional data controls, and secure cloud infrastructure. The process includes ...

going to the office 1-2 days per week, therefore applicants must be within a commutable distance. Technical Requirements C#/.NET Blazor Azure API Development Entity Framework SQL TDD/BDD Desirables SaaS/multi-tenancy experience Azure DevOps and CI/CD pipelines Please apply ...

architecture and technologies in AWS environments. Experience with web application services such as NGINX, Apache, JBoss. Experience of Test Driven or Behaviour Driven development. API development and integration (preferably using Go but not essential). Experience with monitoring systems e.g., ELK, Nagios, New Relic, DataDog, Splunk etc. Working ...

earning substantial bonuses. What's in it for you: Salary to £90k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Your role: As a Software Engineer within the trading engine team … team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City ...

Title : Workday Integration Developer 3 months Remote Inside IR35 - umbrella only Role requirements: Minimum of 3 years of experience with Workday HCM integrations - development, maintenance & support. Experience of Workday Integration Tools: Proficiency with Workday's integration tools and technologies, including Workday Studio, Enterprise Interface Builder (EIB), and Workday … PECI & PICOF. Programming Languages: Knowledge of programming languages such as XSLT for data transformation and scripting languages like JavaScript or Groovy for custom integrations. API Integration: Experience with RESTful and SOAP APIs to connect Workday with other systems and applications. Data Formats: Familiarity with various data formats like ...

processes, and performance metrics. Maintain and upgrade existing systems to ensure stability and continuous improvement. What Were Looking For Top Non-Negotiables Proven Python development experience in a dedicated engineering role. Strong GIS expertise , ideally with experience working with large raster datasets. Required Skills & experience Technical Skills Python (advanced … libraries such as: Rasterio GDAL Shapely (or similar open-source geospatial tools) REST API development & integrations JSON data handling SQL for geospatial and tabular data Git for version control Background Degree in a technical or related discipline. experience designing and building applications across multiple platforms. Strong understanding ...

unlock new revenue streams. 💻 The Role You’ll play a key part in building and scaling a modern fintech platform, working across: Backend: Node.js (API development & scalable services) Frontend: React Native (iOS & Android apps) Database: MongoDB CI/CD, Git, and clean coding best practices You’ll collaborate ...

VueJS framework and its ecosystem is highly desirable Competent with Git for source control. Understanding of MySQL, HTML, CSS, JavaScript Agile Methodologies Any RESTful API development useful Excellent Communication skills If this could be your next career move within an expanding employee-centric company, please drop across your ...

Analysts. Required Skills & Experience: Recent Java 21 (or later) experience. Expertise in TDD, BDD, and large microservice architectures. Agile environment experience, pair programming, and API development. Strong knowledge of automated testing and continuous deployment. Ability to communicate technical concepts to non-technical audiences. Unix/Linux/ ...

skills: Minimum 4 years' commercial C# .NET experience. Strong SQL/MySQL skills (including complex queries). Experience with VueJS and/or Angular. API development and third-party integrations. AWS experience. Desirable skills: AI integration experience (e.g. OpenAI). Use of AI tools (e.g. Claude) in development ...

with monitoring, logging and alerting solutions. • Ability to design, build and optimise cloud platform solutions. • Stakeholder management skills and confidence working across multiple teams. • API development experience. • Azure Data Factory knowledge is beneficial. What They Offer • Salary between £80,000 and £85,000 plus bonus. • Comprehensive benefits package ...

with monitoring, logging and alerting solutions. • Ability to design, build and optimise cloud platform solutions. • Stakeholder management skills and confidence working across multiple teams. • API development experience. • Azure Data Factory knowledge is beneficial. What They Offer • Salary between £80,000 and £85,000 plus bonus. • Comprehensive benefits package ...

with monitoring, logging and alerting solutions. * Ability to design, build and optimise cloud platform solutions. * Stakeholder management skills and confidence working across multiple teams. * API development experience. * Azure Data Factory knowledge is beneficial. What They Offer * Salary between £80,000 and £85,000 plus bonus. * Comprehensive benefits package ...

with monitoring, logging and alerting solutions. * Ability to design, build and optimise cloud platform solutions. * Stakeholder management skills and confidence working across multiple teams. * API development experience. * Azure Data Factory knowledge is beneficial. What They Offer * Salary between £80,000 and £85,000 plus bonus. * Comprehensive benefits package ...

Augmented Generation (RAG) systems to ensure AI outputs are grounded in company-specific data. Integrate various third-party services and internal databases via robust API development and consumption. Design and implement AI Agents capable of multi-step reasoning and task execution. Collaborate with stakeholders to identify manual processes … production-ready automations that reduce manual overhead. High-Performance RAG Pipelines: Implementation of vector databases and retrieval logic for context-aware AI responses. Seamless API Integrations: A library of well-documented integrations for effective system communication. Technical Documentation: Comprehensive guides for all developed agents and automated processes. Experience ...

seeking a Senior AI/ML & Generative AI Engineer with deep expertise in designing, developing, and deploying advanced AI solutions. This includes core Python development using OOPs concepts, Large Language Models (LLMs), and Agentic AI architectures. The ideal candidate will collaborate with clients to understand complex business challenges, architect … Markets. Your Role As a Senior Lead Analyst, you will: •Anchor the engagement effort from business process consulting and problem definition to solution design, development, and deployment. •Lead the discovery and definition of AI/ML solutions and guide teams on project processes and deliverables. •Act as a thought ...

heights with a game-changing SaaS platform already making waves across the UK, Europe, and North America. This isn't just a development role - you'll have a genuine voice in shaping the product, the architecture, and the direction of the company. At Debt Register , we're not just … Haymarket, SSE, Zendesk, Johnson Controls, ADT and More... Culture: Informality and Flexibility, Work-Life Balance, Wellbeing, Personal Growth and Trust Your Skills: Laravel (Backend Development). React & TypeScript. Fintech SaaS. AI/OpenAI API Integration. MySQL & API Development. Docker & CI/CD. ...