Contract Senior Web Services Engineer
3-6 Month Contract
Hourly Rate in USD – Negotiable
Fully Remote – Open to candidates worldwide
We are seeking a Senior Web Services Engineer to join on a contract basis, working remotely with a globally distributed team. This role is ideal for someone who thrives in ambiguity, enjoys problem-solving, and can design scalable, high-performing systems that integrate legacy platforms with modern web services.
Key Responsibilities
* Design and implement scalable database schemas and API interfaces to support large-scale user-generated content with a focus on security, performance, and developer experience.
* Architect clean, performant RESTful APIs, GraphQL solutions, and AI-powered features integrating platforms such as Stripe, Shopify, Salesforce, and OpenAI.
* Build and integrate Customer Data Platforms (CDPs) and AI/ML capabilities (semantic search, RAG, vector embeddings, prompt engineering).
* Drive end-to-end project delivery – from scoping requirements to hands-on development in Python, Node.js, Go (with some PHP).
* Troubleshoot third-party integrations, resolve performance bottlenecks, and develop automated tests.
* Collaborate with cross-functional teams across multiple time zones, translating complex business requirements into clear, actionable solutions.
Skills & Experience
* 5+ years’ backend API development experience with Python/Django, Node.js/NestJS, or Golang/Gin.
* Proven experience building APIs for enterprise-grade apps with complex integrations.
* Strong skills in system design and SQL data modeling for high-traffic applications (10k+ daily users).
* Hands-on experience with LLM/AI features (semantic search, vector DBs, RAG, prompt engineering).
* Comfortable working in fast-paced, agile environments and collaborating with global teams.
* Excellent communication skills with the ability to explain technical trade-offs to non-technical stakeholders.
Rates depend on experience and client requirements
Job Information
* Job Reference: JO-2509-356235
* Salary: Hourly
* Job Start Date: ASAP
* Job Industries: Software Engineering
* Job Locations: Greater London
* Job Types: Contract
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