1 to 25 of 128 API Design Jobs

GCP Solution Architect

Hiring Organisation
83zero Ltd
Location
Edinburgh, City of Edinburgh, United Kingdom
Employment Type
Permanent
Salary
£80000 - £100000/annum
Location: Edinburgh Salary: £80,000 - £100,000 Job Type: Permanent The Role We are looking for an experienced Solution Architect - API & GCP to join a growing technology team in Edinburgh. You will play a key role in shaping the architecture and strategic evolution of an API Marketplace platform … working closely with product, engineering and business stakeholders. This is a great opportunity for an architect with strong API, cloud-native and Google Cloud Platform (GCP) experience to have a genuine influence on enterprise technology direction. Key Responsibilities Own and drive architectural decisions across the API Marketplace platform. ...

Technical Product Manager

Hiring Organisation
HUKM Development
Location
Buckinghamshire, UK
Employment Type
Full-time
Probation: 6 months About the role As a Technical Product Manager at HUKM, you will lead the development and delivery of backend and API-driven products. You will manage development pods, translate business requirements into technical solutions, and drive execution through agile delivery. This is a hands-on technical … development pods of 15 to 20 engineers, ensuring effective collaboration and delivery Define product roadmaps, prioritise features, and maintain product backlogs for backend and API initiatives Design and document API specifications, data models, and system architecture alongside engineering teams Run sprint planning, daily standups, sprint reviews ...

Boomi Architect

Hiring Organisation
Syntax Consultancy Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day 500/day (Outside IR35)
. Start ASAP during Summer 2026. Key skills, experience + tasks will include: Boomi Solution Architect with a strong focus on Boomi/iPaaS, API Management, Event Streaming, integration architecture, governance + technical leadership. Integration Adoption & Project Onboarding - architecture engagement + onboarding of priority projects onto the strategic integration … platform (e.g. SDEC, S4H, DWIT). Production of project-specific integration designs aligned to approved iPaaS, API and Streaming patterns. Completion of architecture assurance reviews and design recommendations for onboarding projects. Support projects through technical discovery, design and implementation phases. Reusable Integration Asset Library: design ...

Software Engineer /Tech Lead - Web Platforms - Technology Consulting

Hiring Organisation
Business Integration Partners
Location
London, UK
Employment Type
Full-time
data, AI and emerging technologies. We are looking for a Technical Lead – Java & Web Platforms to join our growing xTech team and lead the design and delivery of complex, business-critical digital platforms for major UK and international clients. The roleThis is a hands-on technical leadership role combining … software engineering, solution design, team leadership and client engagement. You will provide technical direction to multidisciplinary engineering teams across back-end, front-end, DevOps and QA, while remaining close to the code and day-to-day delivery. Working across the full software delivery lifecycle, you will help shape scalable ...

Lead Software Engineer - GLCM Postings

Hiring Organisation
Hackajob Ltd
Location
Bournemouth, Dorset, South West, United Kingdom
Employment Type
Permanent
with business goals and industry best practices Lead and mentor a team of software engineers, providing guidance, support, and professional development opportunities Drive the design and implementation of high-performance backend services using Java and cloud-native technologies Champion the development of highly resilient, share-nothing, multi-region architectures … availability, and disaster recovery Drive the adoption and optimization of MongoDB (including change streams), Kubernetes, and other modern platforms Set and enforce standards for API design and development (REST/gRPC), including best practices for versioning, documentation, and error handling to ensure robust, secure, and scalable interfaces Guide ...

Integration Architect - Java, AWS, FS - OutsideIR35

Hiring Organisation
Sanderson Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £600 per day + Outside IR35
connectivity across the clients core systems. Key Responsibilities: Own and evolve integration architecture aligned with enterprise standards Define and govern integration patterns across teams Design and deliver event-driven, API-first, and messaging solutions (NATS, REST) Lead end-to-end integration delivery, including hands-on development (Java/… Spring) Ensure scalable, cloud-native solutions on AWS Produce architecture artefacts (blueprints, contracts, ADRs) Guide teams on best practices, API governance, and event design Engage stakeholders and align cross-team integration efforts Primary Skills: Event-driven architecture and messaging systems (NATS, pub/sub, async patterns) API ...

Integration Architect - Java, AWS, FS - OutsideIR35

Hiring Organisation
Sanderson
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 - £600.00 per day
connectivity across the clients core systems. Key Responsibilities: Own and evolve integration architecture aligned with enterprise standards Define and govern integration patterns across teams Design and deliver event-driven, API-first, and messaging solutions (NATS, REST) Lead end-to-end integration delivery, including hands-on development (Java/… Spring) Ensure scalable, cloud-native solutions on AWS Produce architecture artefacts (blueprints, contracts, ADRs) Guide teams on best practices, API governance, and event design Engage stakeholders and align cross-team integration efforts Primary Skills: Event-driven architecture and messaging systems (NATS, pub/sub, async patterns) API ...

Pre-Sales Senior Engineer

Hiring Organisation
Kaluza
Location
London, UK
Employment Type
Full-time
Data, AI, and real-time decision-making we turn energy complexity into growth opportunities for our partners. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable and affordable. With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation … services. You move faster than a traditional sprint by using AI to handle the "heavy lifting" of boilerplate and logic generation. Technical Asset Development: Design, build, and maintain reusable mock services in Node.js/TypeScript. You'll implement contract-first APIs (REST/GraphQL), manage AWS deployments (API ...

Solution Architect - Data & AI Specialist

Hiring Organisation
ITH Pharma
Location
Park Royal, London, Middlesex, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
experienced AI Architect who enjoys solving complex technical problems while staying close to delivery. This is a genuinely hands on role where you will design enterprise AI solutions, partner with senior stakeholders across the business and work alongside engineering teams to bring modern AI capabilities into production. … role where you can combine deep technical expertise with meaningful business impact, we would love to hear from you. ----------------------------------------- Key Responsibilities Architect Agentic Solutions: Design enterprise cloud applications, specializing in agentic AI platform components (orchestration, memory, tool integration, identity, guardrails, observability) and emerging Agentic Commerce. Lead Clients & Drive Growth ...

Principal Software Engineer

Hiring Organisation
Epicor Software Corporation
Location
Bracknell, Berkshire, UK
Employment Type
Full-time
transforms innovative AI concepts into enterprise-grade products trusted by enterprise customers.This is a hands-on engineering role, not a management position. You will design and build, set the technical bar for production quality, and provide the architectural judgement needed to take AI-driven products from promising prototype … designing for the incident nobody planned. This matters to us more than any specific framework.Distributed-systems fluency: service boundaries, transactional thinking, multi-tenant design, API design and versioning.Strong architectural communication - able to explain, document, and defend design decisions across teams, and to review others' designs constructively.Pragmatism ...

Backend Developer (Azure)

Hiring Organisation
Amtis Professional Ltd
Location
Euston, Norfolk, United Kingdom
Employment Type
Contract
Contract Rate
GBP 425 - 475 Daily
outside IR35. This is a hands-on role working on a mature Azure-based backend platform, with responsibility across the full software lifecycle - from design and development through to testing, deployment and production support. You ll be working with C#, .NET, Azure Functions, Azure SQL, Azure Service Bus, Azure … API Management and Azure DevOps, contributing to a platform that supports connected patient services. This role is particularly suited to a developer who can hit the ground running, work independently and own technical delivery end-to-end without requiring day-to-day technical supervision. What You ll Be Doing ...

Backend Developer (Azure)

Hiring Organisation
Amtis Professional Ltd
Location
London, Euston, United Kingdom
Employment Type
Contract
Contract Rate
£425 - £475/day OUTSIDE IR35
outside IR35. This is a hands-on role working on a mature Azure-based backend platform, with responsibility across the full software lifecycle - from design and development through to testing, deployment and production support. You’ll be working with C#, .NET, Azure Functions, Azure SQL, Azure Service Bus, Azure … API Management and Azure DevOps, contributing to a platform that supports connected patient services. This role is particularly suited to a developer who can hit the ground running, work independently and own technical delivery end-to-end without requiring day-to-day technical supervision. What You’ll Be Doing ...

Backend Developer (Azure)

Hiring Organisation
Amtis professional Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£425.00 - £475.00 per day
outside IR35. This is a hands-on role working on a mature Azure-based backend platform, with responsibility across the full software lifecycle - from design and development through to testing, deployment and production support. You’ll be working with C#, .NET, Azure Functions, Azure SQL, Azure Service Bus, Azure … API Management and Azure DevOps, contributing to a platform that supports connected patient services. This role is particularly suited to a developer who can hit the ground running, work independently and own technical delivery end-to-end without requiring day-to-day technical supervision. What You’ll Be Doing ...

Backend Developer (Azure)

Hiring Organisation
Amtis Professional Ltd
Location
Birmingham, Solihull, West Midlands (County), United Kingdom
Employment Type
Contract
Contract Rate
£425 - £475/day OUTSIDE IR35
outside IR35. This is a hands-on role working on a mature Azure-based backend platform, with responsibility across the full software lifecycle - from design and development through to testing, deployment and production support. You’ll be working with C#, .NET, Azure Functions, Azure SQL, Azure Service Bus, Azure … API Management and Azure DevOps, contributing to a platform that supports connected patient services. This role is particularly suited to a developer who can hit the ground running, work independently and own technical delivery end-to-end without requiring day-to-day technical supervision. What You’ll Be Doing ...

Product Manager - Global Card Issuing Platform (BaaS)

Hiring Organisation
WorldFirst
Location
London, UK
Employment Type
Full-time
grade infrastructure that allows clients to launch card programs anywhere in the world through a single integration.You will be responsible for a unified Global API and SDK suite that abstracts the complexity of regional payment networks. Whether a client is launching in Europe, North America, or APAC, your product … will provide a consistent, white-label experience. You will drive both the technical "how" (API/SDK design) and the strategic "where" (global expansion and regional issuing setups).What you'll do:Unified Global API Strategy: Design and maintain a single, polymorphic API architecture that ...

Director Data & Analytics API Experience - Data Services

Hiring Organisation
CME- Group
Location
Belfast, UK
Employment Type
Full-time
Director Data & Analytics API Experience - Data ServicesBackground:CME Group runs some of the world's largest and most important trading venues, including derivatives exchanges, FX/FI platforms. The trading participants include leading investment banks, hedge funds, proprietary trading firms, investment managers, and retail traders, as well as additional … stakeholders such as independent software vendors (ISVs) and data redistributors. To support our unique data and analytics products, we are now building a unified API-first distribution framework, simplifying consumption and value extraction.The Role:We are seeking a key stakeholder for the CMEG External Data-Analytics (DA) APIs ...

Senior Java Developer

Hiring Organisation
CODEVERSE LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£300.00 - £400.00 per day
experienced Senior Java/Python Engineer to join a high-performing Agile engineering team delivering secure, highly available and scalable microservices and API platforms. You will be hands-on with modern engineering technologies, working across microservices, APIs, Kafka, cloud databases, containers and observability, while also providing technical leadership … mentoring junior engineers. Key Responsibilities Design and develop scalable Java/Python microservices and REST APIs. Build and operate event-driven solutions using Apache Kafka . Design and optimise AWS Aurora PostgreSQL databases and data platforms. Deploy and support applications using Docker and Kubernetes . Develop API ...

Python Technical Lead FinTech

Hiring Organisation
Run-Time Group Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
major advantage. Key Responsibilities Technical Leadership Own the technical roadmap, guide architectural decisions, and ensure engineering excellence across backend services. Python Engineering Design and build robust, secure, and scalable microservices using Python (FastAPI, Django, Flask). System Architecture Lead the design of distributed systems, event-driven architectures … data intelligence. DevOps & Cloud Collaborate on CI/CD pipelines, containerisation (Docker, Kubernetes), and cloud deployments (AWS/GCP/Azure). Data & API Strategy Oversee API design, data modelling, and integration with internal and external financial systems. Security & Compliance Ensure systems meet regulatory, security, and audit ...

Intermediate Software Engineer

Hiring Organisation
RX Global
Location
Greater London, United Kingdom
Employment Type
Full Time
PostgreSQL). - Experience working in Agile cross-functional product development teams. - Experience translating ambiguous requirements into scalable solutions. - Working knowledge of SOLID, design patterns, API design, DDD, and event-driven architectures. - Experience building modern web applications with React, Vite, REST, and GraphQL. - Experience developing cloud-native applications ...

Java API Developer, Officer

Hiring Organisation
State Street Bank
Location
London, UK
Employment Type
Full-time
Role Summary :We are seeking a Java API Developer to join our Digital Asset development team. This is a hands-on software engineering role responsible for designing, developing, testing, and supporting RESTful APIs and backend services in a financial services environment. The role contributes to building reliable, secure … work closely with cross-functional teams to build robust, scalable, and secure digital asset products that meet our business and technical requirements. Role Description :Design, develop, and maintain Java-based backend services and REST APIs that support financial services workflows and data use cases. Implement APIs in line with ...

Senior Engineer - Payments

Hiring Organisation
ebury
Location
London, UK
Employment Type
Full-time
development of our next-generation platform channels. Partner on the delivery of new products while continuously maintaining and improving existing ones. Architecture & Design: Collaborate with team members and engineering leaders to design new services and components utilizing our internal Request for Comments (RFC) process. End-to-End Ownership … with Micro Frontends (MFEs) is a major plus. DevOps & Cloud: Hands-on experience with Docker, Kubernetes, Terraform, and AWS.Foundations: Strong understanding of system architecture, API design, scalable service integration, Linux systems, and Git version control. Core Soft Skills: Strong knowledge of basic algorithms, object-oriented/functional design ...

Solution Architect

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
public sector clients, helping to deliver Solirius' services to the highest standard. The role will involve working with multiple business stakeholders, helping them to design business solutions which will then be implemented by the delivery teams. As a Solution Architect, you will be expected to operate with a high … role will require innovative thinking, applying best practices and emerging technologies to solve complex business problems in creative and pragmatic ways. Requirements Key Responsibilities: Design end-to-end solution architectures that meet business, technical, and security requirements. Translate business and technical requirements into scalable, secure, and cost-effective designs. ...

Senior Site Reliability Engineer

Hiring Organisation
Carta
Location
London, UK
Employment Type
Full-time
work to: Build and scale our internal platform offerings (compute, storage and networking services) to ensure the reliability, and performance of our applications. Design and implement monitoring, alerting, and incident response systems. Collaborate with application software engineers (as needed) to guide their design and ensure it scales … reliable, scalable and performant infrastructure to Carta's customers and developers. We are Software and Infrastructure Engineers who specialize in cloud computing, networking, systems design and architecture, storage, real time data telemetry, associated automation, tooling and processes. We possess a breadth and depth of knowledge about Carta's infrastructure ...

Solution Architect

Hiring Organisation
Yorkshire Water
Location
Bradford, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
being made aligning solution delivery with business goals. Through your growing understanding of the event business domain, ensure business process is core to any design considerations Design, shape and govern scalable, secure and highly available solutions using Microsoft Azure technologies, ensuring they meet both current and future business … demands. Play an active role in architecture forums and design authorities, championing best practice and contributing to the continuous evolution of architectural standards and frameworks. Provide expert technical leadership and guidance to engineering teams, supporting the successful delivery of robust, high-quality solutions. Define, establish and uphold governance standards ...

Solution Architect

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
team you'll be working with: We are looking for a Solution Architect to help our clients design and deliver modern, scalable and secure digital solutions, primarily on Microsoft technologies. You will combine architecture leadership with client-facing consulting. That means working directly with stakeholders to understand their goals … shaping technical options and trade-offs, and guiding delivery teams to implement the design safely. This role suits someone who enjoys turning ambiguity into clear decisions, can explain technology, and is happy getting close to the code when needed. What you'll be doing: Discovery and stakeholder engagementLead workshops ...