Lauren Bell

Senior API Engineer specializing in Java, Python, Node.js, REST API, and GraphQL; proven ability to deliver scalable backend solutions. Strong collaborator with 8 years of experience driving robust API architectures in London-based teams.

1. Senior API Engineer

   May 2023  —  Present

   FinTech Nexus Ltd., London, UK

   Responsibilities Designed and maintained RESTful APIs supporting digital banking and payment solutions. Developed microservices using Java Spring Boot and Node.js. Implemented OAuth 2.0 and JWT authentication mechanisms for secure API access. Integrated third-party payment gateways, KYC providers, and CRM platforms. Collaborated with product managers, QA engineers, and frontend developers in Agile environments. Created and maintained API documentation using Swagger/OpenAPI. Achievements Reduced API response times by 35% through performance optimization. Led migration of 50+ legacy endpoints to a microservices architecture. Increased API uptime to 99.95% through monitoring and reliability improvements.

2. API Developer

   Jun 2020  —  Dec 2022

   CloudBridge Technologies, Manchester, UK

   Responsibilities Developed REST APIs for e-commerce and SaaS platforms. Built backend services using Python and Node.js. Created automated API test suites using Postman and PyTest. Worked with PostgreSQL and MongoDB databases. Participated in CI/CD implementation using GitHub Actions and Jenkins. Achievements Reduced production defects by 30% through automated API testing. Improved deployment efficiency by implementing CI/CD pipelines. Delivered API integrations for multiple enterprise clients.

3. Junior Software Engineer

   Mar 2018  —  May 2020

   Digital Solutions Group, Birmingham, UK

   Responsibilities Assisted in developing backend APIs and web services. Performed API testing, debugging, and issue resolution. Supported database design and optimization activities. Contributed to technical documentation and code reviews. Achievements Successfully delivered 20+ API enhancements. Improved API documentation quality and onboarding processes.