JavaScript Developer, Contractor, Full-stack | NodeJS, TypeScript, React, AWS | Disruptive Star[...]

Owen Thomas | Pending B Corp; Remote; GBP 80,000 - 100,000; Full time

Job summary

A growing technology start-up is looking for a JavaScript Developer with expertise in NodeJS and a passion for working on innovative consumer B2C platforms. You’ll develop robust backend services and APIs, ensuring high performance and security. This contract role offers a competitive rate of £500 per day and the flexibility to work remotely or hybrid from London. Ideal candidates will have substantial experience in startup environments and the ability to handle complex APIs.

Qualifications

• 6+ years commercial experience in backend technologies, mostly with NodeJS.
• Proven start-up experience with ownership in consumer B2C brands.
• Confidence in handling large datasets and complex API integrations.

Responsibilities

• Develop and optimize backend services and APIs for mobile and web platforms.
• Design low-latency event processing pipelines.
• Ensure reliable, scalable, and secure backend infrastructure.

Skills

NodeJS

TypeScript

React

AWS

Backend technologies

API development

Communication skills

Job description

JavaScript Developer, Contractor

Full‑stack | NodeJS, TypeScript, React, AWS | Disruptive Start‑up, B2C | Rate £500 / day (Outside) | 6 months | UK remote or London Hybrid

Opportunity

We’re supporting an innovative, fast‑moving founding team. They’re building an innovative B2C platform with many partnerships already signed up – a very exciting chance to take on a lot of responsibility and work in a small team with proven founders and engineers on a disruptive, data‑heavy B2C application.

You’ll work closely with the founding team to build scalable, secure, and high‑performance systems that deliver an exceptional user experience.

Responsibilities

• Develop, maintain, and optimize robust backend services and APIs that power our mobile and web platforms
• Design and implement low‑latency event processing pipelines
• Ensure backend infrastructure is reliable, scalable, and secure
• Enhance database efficiency and refine data storage strategies
• Maintain comprehensive multi‑layered test coverage
• Collaborate closely with frontend and mobile teams to define and deliver API contracts
• Set up and manage effective monitoring, logging, and alerting systems
• Influence architectural decisions and help establish engineering best practices
• Conduct code reviews and provide mentorship to junior developers
• Explore and integrate new technologies to expand platform capabilities
• Work with product and design teams to convert requirements into scalable technical solutions
• Continuously refine development workflows and improve system performance

Qualifications

• 6+ years commercial experience in backend technologies, with majority focused on NodeJS.
• Proven track record of start‑up experience, working for cool innovative consumer B2C brands where you've taken ownership.
• Confidence working on huge datasets and complex API work.
• Great communication skills and attitude to get your hands dirty across the stack and business challenges.
• Nice to have: full stack experience, with TypeScript.

Details

• Location: Remote
• Type: Contract, full‑time
• Rate: circa £500 / day
• Start: ASAP