'API Development' Job Vacancies

151 to 175 of 510 API Development Jobs

GenAI Python Developer x4

South East, United Kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

GenAI Python Developer x4

london, south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

slough, south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

london (city of london), south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

Senior Backend Developer

Manchester, United Kingdom
The Portfolio Group
/BDD principles Create and maintain RESTful and GraphQL APIs Collaborate with POs, BAs, and stakeholders to define solutions Mentor junior developers and promote best practices Drive improvements in development processes and tools What You Bring 5+ years of backend development experience Expertise in C#, .NET (preferably .NET 6+), and SQL Server Deep understanding of SOLID and OOP … principles Skilled in Git, Unit Testing (NUnit), and API development Familiarity with CI/CD pipelines and agile methodologies Strong communication and problem-solving skills Desire to grow within a dynamic and evolving team Why Join? This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be … part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters. Ready to build something that helps others-and builds your career in the process? Apply today. 48954MSR2 INDMANS More ❯
Employment Type: Permanent
Salary: £70000/annum
Posted:

Lead Software Engineer, Java Microservices

London, South East, England, United Kingdom
Hybrid / WFH Options
Salt Search
testing, and implementing modern microservices-based applications running in the public cloud. This is a hands-on position within a feature team that works collaboratively across the full software development lifecycle. What You'll Be Doing Designing, producing, testing, and implementing high-quality software across the system lifecycle Working within a permanent feature team focused on delivering business-critical … in a fast-paced Agile environment (two-week sprints) Collaborating with architects, principal engineers, and key stakeholders to align technical solutions with business objectives Applying Agile and Test-Driven Development (TDD) principles to build resilient, fast-running, and maintainable code Building and maintaining API-driven Java microservices hosted on public cloud infrastructure Contributing to intentional architecture while supporting … Proven ability to design and deliver well-tested, production-ready software with strong focus on functional and non-functional requirements Deep understanding of microservices architecture , cloud-native applications, and API development Experience with distributed systems - managing workloads at scale using modern practices for availability, performance, and observability Knowledge and experience with Test-Driven Development (TDD) and automated More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Full Stack Engineer

Birmingham, West Midlands, United Kingdom
Searchstone Ltd
kicking off their search for the next one! Key technologies are as follows: Proficiency in scripting languages such as TypeScript and JavaScript Experience with React and Next.js for frontend development Familiarity with Node.js API development using frameworks like Fastify, Express Experience using API testing tools such as Postman or Bruno Exposure to document and relational databases More ❯
Employment Type: Permanent
Salary: £50,000
Posted:

Senior Full Stack Developer (Cyber Security)

Berlin, Germany
Cyber Curriculum
real-time data processing, and integrate cutting-edge cybersecurity tools ( CrowdStrike, Elastic, Windows Defender ). You'll also help shape best practices, guide architectural decisions, and foster a strong development culture within the team. Key responsibilities : Develop & optimize full-stack applications using Supabase (SQL), NextJS, TypeScript, and Python . Build scalable and secure APIs to interact with security tools … system architecture decisions , ensuring scalability and maintainability. Foster a collaborative team environment , helping junior developers grow their expertise. Requirements Required skills & experience : 5+ years of experience in full-stack development , ideally in cybersecurity or security-related applications . Proven experience leading and mentoring junior developers in a team setting. Expertise in TypeScript, NextJS, Python, and Supabase (SQL) . Strong … experience with API development (REST, GraphQL), authentication (OAuth, JWT), and security best practices . Familiarity with SIEMs, EDR solutions, security automation, and large-scale security data processing . Experience working with large-scale databases, query optimization, and performance tuning . Hands-on experience integrating with security tools like CrowdStrike, Elastic, or Windows Defender . Knowledge of cloud platforms More ❯
Employment Type: Permanent
Salary: EUR Annual
Posted:

Backend Engineer - .NET

Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Ronald James
a sophisticated core platform built with .NET (C#) and hosted on Microsoft Azure , applying modern microservices architecture at scale. You’ll also gain exposure to Node.js and TypeScript for API development and integration work, plus Angular for front-end experiences. The environment includes modern DevOps practices with Terraform (IaC) , GitHub Actions (CI/CD) , and Kubernetes for scalability More ❯
Employment Type: Full-Time
Salary: £40,000 - £70,000 per annum
Posted:

Machine Learning Engineer Advertising

Utrecht, Netherlands
Bol
the trade-offs and can make the right decisions at every layer of implementation based on model, hardware and latency/throughput requirements. You have extensive experience with Web Development (Kubernetes, Docker, API development), databases (PostgreSQL, BigTable, Redis or (nice to have) vector databases), and MLOps tooling such as MLFlow, Vertex AI, Kubeflow, and are excited about … low-latency service development, with experience in (or eagerness to learn) Rust. On top of that, it would be nice if you also have experience in Go, Java, or C++. We embrace a hypotheses-driven approach and expect you to have a passion for experimentation. You are also eager to test and validate your models. We challenge you to More ❯
Employment Type: Permanent
Salary: EUR 60,000 - 80,000 Monthly
Posted:

Full-Stack .NET Developer

Greater Bristol Area, United Kingdom
Hybrid / WFH Options
CPS Group (UK) Limited
successful placement earlier this year. Due to strong growth and ongoing investment in their technology, they’re looking to add another talented Full-Stack .NET Developer to their agile development team. The Role You’ll play a key role in designing and building scalable, secure, and high-quality software solutions. Working closely with Product Owners and fellow engineers, you … ll contribute to all stages of development — from concept and design through to deployment and continuous improvement. Delivering high-quality, maintainable code that meets performance and security standards. Collaborating with designers, developers, and stakeholders in an agile team environment. Participating in sprint planning and design sessions, contributing to technical decisions. Troubleshooting and resolving complex technical challenges quickly and effectively. … Continuously improving code quality through testing, reviews, and best practices. Skills & Experience: .NET (C#, ASP.NET) Angular REST/API Development SQL Server TypeScript, JavaScript, HTML, CSS Strong understanding of Agile delivery (Scrum or Kanban) Experience with Azure services (e.g. Cosmos DB, Microservices, Docker, NServiceBus) Familiarity with cloud-native or distributed architectures Benefits: Salary up to £55,000 per More ❯
Posted:

Lead Java Fullstack Engineer

Leeds, England, United Kingdom
K&K Talents
K&K Social Resources & Development GmbH is an international recruiting agency that has been providing technical resources in the European region since 1993. This position is with one of our clients in the United Kingdom, who is actively hiring candidates to expand their teams. Job Role: Lead Java Fullstack Engineer Location: Leeds, England, United Kingdom Technology; Java 17, GCP … deliver backend features with a focus on performance and reliability. Work closely with architects and product owners to define technical solutions aligned with business goals. Required Skills & Experience Backend Development: 5–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular . Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to Have GCP Data Services: Experience with BigQuery , Spanner , Cloud Composer , or Dataflow . Generative AI: Exposure to LangChain More ❯
Posted:

Lead Java Fullstack Engineer

bradford, yorkshire and the humber, united kingdom
K&K Talents
K&K Social Resources & Development GmbH is an international recruiting agency that has been providing technical resources in the European region since 1993. This position is with one of our clients in the United Kingdom, who is actively hiring candidates to expand their teams. Job Role: Lead Java Fullstack Engineer Location: Leeds, England, United Kingdom Technology; Java 17, GCP … deliver backend features with a focus on performance and reliability. Work closely with architects and product owners to define technical solutions aligned with business goals. Required Skills & Experience Backend Development: 5–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular . Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to Have GCP Data Services: Experience with BigQuery , Spanner , Cloud Composer , or Dataflow . Generative AI: Exposure to LangChain More ❯
Posted:

Full Stack Engineer

South East, United Kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8-15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Engineer

London Area, United Kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Posted:

Full Stack Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Posted:

Full Stack Engineer

london, south east england, united kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Posted:

Full Stack Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Posted:

Full Stack Engineer

slough, south east england, united kingdom
Hybrid / WFH Options
HCLTech
be able to lead/mentor a small team of 5 members. Being a lead, should have some experience in any of the UI frameworks. Required Skills & Experience Backend Development: 8–15 years of experience with Java, Spring Boot, and microservices architecture. DevOps & Cloud: Hands-on experience with GCP, AWS, or Azure; familiarity with CI/CD pipelines. API Development: Proven expertise in building and maintaining RESTful APIs. Frontend Knowledge: Working knowledge of React or Angular. Testing: Strong background in automated testing and quality assurance practices. Mindset: Demonstrated commitment to continuous learning and excellent communication skills. Good to have- GCP Data Services: Experience with BigQuery, Spanner, Cloud Composer, or Dataflow. Generative AI: Exposure to LangChain, LangGraph, or More ❯
Posted:

Senior Java Software Engineer

Surrey, England, United Kingdom
Fimador
such as graduates and juniors Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution across the development team. Experience : 5+ years … experience in software engineering, with a strong focus on Java development. Experience leading and/or mentoring technical teams within fast-paced, agile environments. Expertise in microservices architecture, REST API development, and security. Experience with version control (GIT preferred) and cloud platforms like AWS. It would be a plus if you also possess previous experience in: TDD/ More ❯
Posted:

Senior Java Software Engineer

guildford, south east england, united kingdom
Fimador
such as graduates and juniors Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution across the development team. Experience : 5+ years … experience in software engineering, with a strong focus on Java development. Experience leading and/or mentoring technical teams within fast-paced, agile environments. Expertise in microservices architecture, REST API development, and security. Experience with version control (GIT preferred) and cloud platforms like AWS. It would be a plus if you also possess previous experience in: TDD/ More ❯
Posted:

Cloud-Native Software Developer (Ref: 190314)

United Kingdom
Hybrid / WFH Options
Forsyth Barnes
GCP). • Proficient in Java. • Proficient in Docker and Kubernetes (deployment, scaling, health checks, config management). • Familiarity with Infrastructure as Code (e.g., Terraform, Ansible). • Strong understanding of API development and Oracle/PostgreSQL databases. • Experience with CI/CD automation and deployment strategies (e.g., blue/green, canary). • Good grasp of observability principles (logs, metrics … traces). • Experience with secure coding, identity management, and secrets management. • Proficient with the use of software development frameworks such as Spring, Hibernate, etc. • Strong version control (Git) and branching strategy experience. • Familiar with contract testing, integration testing, and automated quality gates. More ❯
Posted:

Senior Full Stack Developer

Exeter, Devon, United Kingdom
Hybrid / WFH Options
ISR Recruitment Ltd
days in the office) c£60,000 per year Plus excellent company benefits (including Pension, Bonus, Life Insurance, Healthcare, etc.) Skills and Experience: Extensive experience with web application and API development at a senior level Must be able to mentor more junior members of the team in the absence of the Technical Lead Expert understanding of microservice architecture … scalable and performant solutions Design and develop Front End code with a focus on security, accessibility and delivering a great user experience Provide input on key technology, architectural and development decisions The Opportunity: My client based in the sustainability sector are currently on the lookout for a Senior Full Stack PHP Developer on a permanent basis. In this role … systems to a high standard of security, scalability and performance. The successful candidate will have demonstrable experience working at a senior level across the full stack within a web development team, with keen attention to detail and strong problem-solving skills. Please note this role will not be fully remote and there is no flexibility on the two days More ❯
Employment Type: Permanent
Salary: GBP 60,000 Annual
Posted:

Senior Data Engineer

United Kingdom
Hybrid / WFH Options
ID5.io
observability tools (Grafana or equivalent). Exposure to analytics, reporting, and BI tools such as Apache Superset, Lightdash or OpenSearch Willingness to work across the stack by contributing to API development and, at times, UI components (Vue.js, Zoho, or similar). Excellent communication and collaboration skills, with the ability to work independently and adapt quickly to complex codebases. … work from different WeWork locations Regular offsites to enjoy face-to-face time and to bond further with your colleagues A dynamic environment that offers room for growth and development to all employees A friendly, international, and multicultural team We are proud to be an equal opportunity employer. We celebrate diversity and are passionate about creating an inclusive environment More ❯
Posted:

Senior Software Engineer

South West, United Kingdom
Hybrid / WFH Options
Sanderson Recruitment
centre of its business. The company is going through a period of impressive growth across their technology team, creating opportunity to work on challenging projects and contribute to the development of its digital platforms. As a Senior Software Engineer, you will be involved in the full lifecycle of software development; from small front-end changes to developing APIs … with experience in a LAMP (Linux/Apache/MariaDB/PHP) environment considered advantageous. Experience in migrating legacy systems to modern architectures and frameworks. Solid understanding of RESTful API development, web application design patterns, and secure coding practices. Familiarity with CI/CD pipelines, automated testing, and integration with third-party services; experience with Docker, Kubernetes, or More ❯
Employment Type: Permanent
Salary: £80,000
Posted:
API Development
10th Percentile
£46,500
25th Percentile
£52,400
Median
£65,000
75th Percentile
£81,250
90th Percentile
£92,500