1 to 25 of 94 API Design Jobs

Python Developer (FastAPI)

Hiring Organisation
Robotics technology LLC
Location
Irving, Texas, United States
Employment Type
Any
Salary
USD Annual
Responsibilities Develop backend services using Python and FastAPI framework. Collaborate with frontend developers to integrate user-facing elements with server-side logic. Design and implement data storage solutions. Optimize performance and scalability of applications. Requirements Strong proficiency in Python. Experience with FastAPI framework. Familiarity with Angular or willingness … learn. Solid understanding of RESTful API design principles. Ability to work effectively in a collaborative environment. Skills: api, restful api design, design, python, fastapi, data, angular, collaborative environment, framework, design principles Equal Opportunity Employer We are an equal opportunity employer. All aspects ...

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 ...

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 ...

Backend Developer Python

Hiring Organisation
Robotics technology LLC
Location
Plano, Texas, United States
Employment Type
Any
Salary
USD Annual
Orchestration Kubernetes Version Control Git with complex branching strategies Software Development Methodologies and best practices Data Structures & Algorithms Strong understanding and application Object-Oriented Design (OOD) Modular and flexible software design API Development RESTful API design and implementation Testing & Debugging Pytest, automated testing frameworks DevOps ...

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 ...

Backend Developer / Engineer (Python, Django, Terraform)

Hiring Organisation
Intone Networks
Location
New York, United States
Employment Type
Any
Salary
USD Annual
applications, ensuring they are scalable, efficient, and reliable. The ideal candidate will be proficient in all stages of the software development lifecycle, from system design to deployment and maintenance. Key Responsibilities Backend Development: Design, build, and maintain robust, high-performance backend services and APIs using Python … Infrastructure Management: Use Terraform to provision and manage cloud infrastructure, ensuring our backend services are deployed in a scalable and reliable environment. Database Management: Design, optimize, and interact with relational and/or NoSQL databases to support application functionality. API Design: Develop and document clean, well-structured ...

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 ...

Senior Java Engineer

Hiring Organisation
La Fosse Associates Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 Daily
currently working with our client to seek an Integration Engineer to design and build the Middleware layer connecting Shopify with enterprise Back End systems such as OMS, ERP, and WMS. This role focuses on technical integration and data flow rather than Front End or theme development. You'll work … IR35 with 3 days onsite in Paddington, London Responsibilities: Develop and maintain custom Shopify app logic and Middleware services for system-to-system integration. Design and implement data flows using REST/GraphQL APIs, webhooks, and event-driven patterns (eg Kafka). Define and manage data contracts, schema mappings ...

Solution Architect: 3 Month Contract: Manchester/Hybrid

Hiring Organisation
Adecco
Location
Warrington, Cheshire, UK
Employment Type
Full-time
Architect for a project (Outside IR35.) You will work closely with senior stakeholders and the wider team on both high and low level solution design to provide improvements on existing systems. Provide technical leadership and guidance throughout the project lifecycle, ensuring solutions are scalable, secure, and align with business … complex enterprise solutions. Strong background in software development and system integration. Strong understanding of cloud platforms (AWS, Azure, Google Cloud) Experience with microservices architecture, API design, and integration patterns. Experience with DevOps practices and tools. Please apply now to be considered for this role. Desired Skills and Experience ...

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 ...

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 ...

Spring Boot Developer

Hiring Organisation
Tangentia
Location
New York, United States
Employment Type
Any
Salary
USD Annual
Position: Spring Boot Developer Location: NYC, NY Duration: 6+ Months The full stack role is heavy emphasis on REST api design/implementation in Spring & NoSQL capabilities. The Angular portion is in the nice-to-have so they understand who their API consumer is. SKILLS/QUALIFICATIONS … application development utilizing Java for Web Development purposes Experience in the development of service oriented architecture application, good understanding of Object Oriented Design and Design Patterns Strong knowledge of Java Server Pages (JSP), DHTML and JavaScript are essential Experience with MVC patterned applications using JavaScript frameworks and working ...

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 ...

QA Automation Engineer

Hiring Organisation
Biogensys
Location
Plano, Texas, United States
Employment Type
Any
Salary
USD Annual
ecosystem. This role requires hands-on expertise in testing service contracts, Level 2/Level 3 APIs, and the ability to apply Domain-Driven Design (DDD) principles within the testing strategy. You will collaborate with product managers, architects, and developers to ensure our microservices are reliable, scalable, and meet … both functional and non-functional requirements. Key Responsibilities: Automation Framework Development Design, develop, and maintain comprehensive test automation frameworks for microservices, focusing on integration, contract, and end-to-end testing. Ensure tests are reliable, repeatable, and easily maintainable across multiple services and deployment pipelines. API and Service Contract ...

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 ...

Senior Software Engineer

Hiring Organisation
Reed Technology
Location
Nottingham, Nottinghamshire, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
automation, and continuous improvement-and they're looking for someone who shares that mindset. Key responsibilities as the Senior Back-End Software Engineer are: Design and develop backend services using Node.js and TypeScript , deployed in a cloud-native environment. Build and maintain GraphQL and REST APIs to support … team. Skills & Experience needed: Essential: Strong experience with Node.js and TypeScript Proven background in microservices architecture Solid understanding of GraphQL and RESTful API design Experience with SQL and NoSQL databases Familiarity with CI/CD, automated testing, and modern development workflows Desirable: Experience with Azure or other cloud ...

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 ...