1 to 25 of 83 API Design Jobs

Mobile Backend Developer (JAVA/Kotlin)

Hiring Organisation
Stackstudio Digital Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
Promote and practice best development approaches such as Test-Driven Development (TDD) and Behavior-Driven Development (BDD) to deliver high-quality, maintainable code. Apply design patterns to address complex problems, ensuring code is efficient, readable, and reusable. Adhere to IT and Information Security policies and procedures in all engineering … Your Profile Essential Skills/Knowledge/Experience: Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, Secure API design Understanding of API design for mobile application with event driven architecture Strong analysis and problem-solving skills Knowledge ...

Senior Applications Engineer - Java

Hiring Organisation
Hays Specialist Recruitment
Location
Manchester, Lancashire, United Kingdom
Employment Type
Permanent
Salary
GBP 45,000 - 70,000 Annual
possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

Senior Applications Engineer - Java

Hiring Organisation
Hays
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£70,000
possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

Technical Architect

Hiring Organisation
IPS Group
Location
London, United Kingdom
Employment Type
Permanent
designed to enable long-term career progression. Role Summary Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. The role will take technical ownership of the organisations enterprise technology landscape. This is a pivotal position within … wide integration strategy, including the governance of integration patterns (such as synchronous APIs, event-driven architecture, asynchronous messaging, and batch ETL). Lead the design and documentation of internal and external APIs, ensuring best practice in RESTful design, versioning, and OpenAPI standards. Work with Engineering and Data teams ...

Technical Architect

Hiring Organisation
IPS Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£100,000 - £120,000 per annum
designed to enable long-term career progression. Role Summary Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. The role will take technical ownership of the organisation’s enterprise technology landscape.This is a pivotal position within … wide integration strategy, including the governance of integration patterns (such as synchronous APIs, event-driven architecture, asynchronous messaging, and batch ETL). Lead the design and documentation of internal and external APIs, ensuring best practice in RESTful design, versioning, and OpenAPI standards. Work with Engineering and Data teams ...

Mulesoft Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£470 - £520/day
Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing … stakeholders to understand business requirements & translate them into integration solutions. Required Skills: Good experience of: Integration concepts & technologies. MuleSoft Anypoint Platform & components (Mule ESB, API Manager, CloudHub, etc.) Java programming & experience with other programming languages such as XML, JSON, SQL Agile software development methodologies. Cloud-based integration platforms such ...

Senior Backend Developer

Hiring Organisation
DCV Technologies Limited
Location
Manchester, North West, United Kingdom
Employment Type
Contract, Work From Home
cloud-native platforms supporting mobile applications in a regulated environment. This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. You will contribute across the full SDLC while influencing engineering standards, best practices, and technical quality. Key Responsibilities Design … continuous improvement initiatives Required Skills & Experience Strong backend development experience with Java and/or Kotlin Spring Boot, REST APIs, microservices architecture Secure API design, OAuth, authentication/authorisation AWS or cloud platform experience Event-driven systems and distributed architectures Experience working in financial services or regulated environments ...

Data Analyst

Hiring Organisation
Computappoint
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
technically proficient Data Analyst to join the IT Department within the Strategy & Architecture Team. This role will have a strong focus on API design and integrations between systems. This role is critical in enabling data-driven decision-making and ensuring seamless data exchange across internal systems and external … platforms. Key Responsibilities Analyse and interpret complex datasets to support IT operations and strategic initiatives. Design, document, and maintain APIs that facilitate secure and efficient integration of data between systems. Create data dictionaries that describe data structures, elements, their meanings, and relationships within a dataset or database. Create Business ...

Senior API Technical Consultant (GraphQL Specialist)

Hiring Organisation
Staffworx Limited
Location
Slough, Berkshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
market rates, outside IR35, 2 days on site
Senior API Technical Consultant (GraphQL Specialist) Design and build next generation of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental … evolution of our APIs, ensuring our services are resilient, scalable and secure within a cutting-edge, cloud-native environment (Helm, Kubernetes). The Deliverables Design and build sophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. Lead the design and evolution of our API schemas ...

Senior Platform Engineer

Hiring Organisation
Adroit People Ltd
Location
Halifax, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
Up to £470 per day
lead the next wave of cloud innovation? Join our Cloud Native Engineering Lab as a Senior Cloud Platform Engineer (GCP) and help us design, build, and operate secure, automated cloud platforms that empower product teams to deliver API-first services at pace and with confidence. Responsibilities Engineering Leadership … hands-on leader, balancing deep technical work with mentoring and coaching to raise the bar on reliability, security, and simplicity. Platform Development: Design, build, and operate Google Cloud Platform (GCP) capabilities using Infrastructure-as-Code (Terraform) and modern CI/CD tools (GitHub Actions, Jenkins, Harness, Spinnaker). Security ...

Senior Platform Engineer

Hiring Organisation
Adroit People Ltd
Location
leeds, west yorkshire, yorkshire and the humber, united kingdom
lead the next wave of cloud innovation? Join our Cloud Native Engineering Lab as a Senior Cloud Platform Engineer (GCP) and help us design, build, and operate secure, automated cloud platforms that empower product teams to deliver API-first services at pace and with confidence. Responsibilities Engineering Leadership … hands-on leader, balancing deep technical work with mentoring and coaching to raise the bar on reliability, security, and simplicity. Platform Development: Design, build, and operate Google Cloud Platform (GCP) capabilities using Infrastructure-as-Code (Terraform) and modern CI/CD tools (GitHub Actions, Jenkins, Harness, Spinnaker). Security ...

Software Developer

Hiring Organisation
Erin Associates
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent
Salary
£55,000
SoftwareDeveloper(API Development/Backend Node.js, C#, Fullstack) Birmingham, West Midlands (Hybrid 1 day onsite a week) 55k + Benefits Were partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. Theyre looking for a Software Engineer with strong API and backend development … power enterprise software products. Youll work primarily with Node.js and C#, collaborating with cross-functional teams to deliver well-architected, maintainable solutions. Key Responsibilities Design, build, and maintain RESTful APIs and backend systems. Develop high-quality, scalable code using Node.js and C#. Collaborate with product and engineering teams ...

Application Solution Architect

Hiring Organisation
McGregor Boyall Associates Limited
Location
Chester, Cheshire, North West, United Kingdom
Employment Type
Contract
interfaces, and define non-functional requirements. Ensure solutions are fit for purpose by collaborating with stakeholders and vendors, while assessing the impact of strategic design decisions. Work closely with both business and technology teams to shape the solution intent and architectural vision. Rapidly develop high-level architecture, refining details … prioritise technology-focused backlog items for the architecture runway. Provide clarity to development teams on architectural aspects, offering solution options to overcome impediments. Conduct design reviews to confirm all non-functional requirements are met (e.g., security, performance, scalability, usability, reliability). Operate as an individual contributor. Required Skills ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 - £350 per day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £350/day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

Senior Java Developer (Full Stack)

Hiring Organisation
Methodius Ltd
Location
Letterkenny, Donegal, Ireland
Employment Type
Permanent
Salary
EUR Annual
maintain a highly automated Continuous Delivery pipeline. Work as part of a delivery team, collaborating with others to understand requirements, analyses and refine stories, design solutions, implement them, test them, and support them in production. Work as part of a delivery team, collaborating with others to understand requirements, analyses … refine stories, design solutions, implement them, test them, and support them in production. Help create a culture of learning and continuous improvement within your team and beyond. Design and develop ergonomic and understandable user interfaces. Work closely with users to gain feedback and ensure they ...

Senior Backend Engineer (Telco Integration Lead) Golang

Hiring Organisation
Ventula Consulting Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our right to win, and you will be the engineer responsible for building the bridge to it. You will be the Critical … build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. ? Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors ...

Full Stack Developer - Typescript

Hiring Organisation
Computer Futures
Location
Coventry, West Midlands, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£65000 - £70000/annum personal & business bonus
About the Role We are seeking a highly skilled Full Stack Software Engineer with a strong focus on TypeScript to design, develop, and maintain cutting-edge applications and services. You will play a key role in building scalable, cloud-based solutions and ensuring high performance, reliability, and security across … systems. Key Responsibilities Design, develop, and maintain robust full-stack applications using TypeScript and modern frameworks. Implement scalable cloud architectures leveraging AWS, Azure, or GCP. Optimise system performance and ensure security best practices. Collaborate with cross-functional teams including developers, DevOps, and product managers. Conduct code reviews and mentor ...

Senior .NET Developer

Hiring Organisation
Ronald James
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £80,000 per annum
reliability, and agility — and we're looking for a Senior .NET Developer who shares our drive to deliver engineering excellence. What You'll Do Design and implement high-performance, scalablemicroservicesusing.NET 6+ and C# Own features end-to-end: from concept, design, architecture, to deployment in production Collaborate with … cross-functional teams on system architecture, design reviews, and best practices ChampionSOLID, clean code, anddomain-driven design (DDD),etc. Work withAzure services, CI/CD pipelines, and containerised environments (Docker, Kubernetes) Help mentor and guide developers, contributing to a culture of technical excellence What You Bring 5+ years ...

Solutions Architect - 2 Days Either London or Peterborough/Rest Remote

Hiring Organisation
ZENZO DIGITAL LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£85,000
tech and designing new. Some of their core and long-standing solutions will be completely replaced to modern architecture and technology. Experience Seeking: Solution design for data engineering and software engineering projects Experience of workflows, orchestrations and data/system integration DevOps and end to end data pipeline Prior … scripting Previous .Net Development experience nice to have Previously designed solutions to move solutions from on-premise to Cloud AI and Machine Learning understanding Design Patterns Data Fabric, Snowflake or other Kubernetes and API Design' Exposure to Technical Design Authority and Governance Team Lead experience Agile ...

Front End React Developer

Hiring Organisation
Ascend Consulting
Location
North West London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £80,000 per annum
will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Working in a team of Front-End engineers Writing clear & concise code Working closely with Back-End engineers Participate … architecture design code reviews API design with the Back-End engineers and other team members to establish more functional, cohesive code Create, maintain documentation while implementing the best coding practices standards Hands-on approach Participation in sprint rituals What you’ll need 6+ years experience developing large ...

Senior Software Engineer (BE)

Hiring Organisation
Globoforce Inc
Location
Dublin, Ireland
Employment Type
Permanent
Salary
EUR 70,000 - 90,000 Annual
grown-up software engineering!This team is at the heart of how Workhuman helps our customers build and sustain cultures of gratitude. These teams design and deliver innovative solutions that enable our customers to spread a culture of recognition and celebration within their workplaces. Tech stack used by this … team: Java 17, Spring (Spring Boot, Spring Web Stack, Spring Data or Spring JDBC), RESTful webservices, Apache Kafka, Apache Camel, AWS, Terraform, API, Oracle, Postgres, NoSQL DB, PL/SQL, JMeter, Jenkins, Sonar, Maven, Git, Docker/Containerization, AWS OpenSearch, AWS Lambda, What you will do: Collaborate with ...

API Engineer

Hiring Organisation
Halian Technology Limited
Location
Warwick, Warwickshire, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
cloud solutions for practices and businesses. Youll work with innovative tools, a collaborative culture and meaningful career progression Role Overview: You'll design and implement the API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. Working … architect scalable, secure APIs that handle sensitive payroll and accounting data while enabling rapid deployment of AI capabilities across our business. Key Responsibilities: Design and implement RESTful APIs that expose product capabilities to AI services and third-party integrations Build production-grade APIs using C# .NET, SQL, and Azure ...

Technical Lead

Hiring Organisation
Oscar Associates (UK) Limited
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
About the Role We're looking for a Technical Lead with deep expertise in the Microsoft technology stack to lead the design, development, and delivery of robust software solutions. This role combines hands-on technical leadership with mentorship and strategic oversight - ideal for someone who thrives at the intersection … architecture, coding, and team enablement. Key Responsibilities Lead technical design and development across projects built on the Microsoft stack (e.g., .NET Core, C#, Azure, SQL Server). Architect scalable, secure, and maintainable solutions aligned with business goals and best practices. Guide and mentor developers , performing code reviews and fostering ...

Cloud Platform Engineering Lead / DevOps Lead

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Hybrid Employer: Global Technology Consultancy Mandatory Skill: Google Kubernetes Engine (GKE) Role Purpose We are seeking a hands-on Cloud Platform Engineering Lead to design, build and operate secure, automated cloud platform capabilities. You will enable product teams to deliver API-first services rapidly and reliably, while balancing … deep technical work with coaching and engineering leadership. Key Responsibilities Design, build, and operate platform capabilities using Infrastructure-as-Code and modern CI/CD . Embed secure-by-design principles from architecture to runtime. Define and manage SLOs/SLIs ; drive observability, performance tuning, and automation. Promote ...