JavaScript Developer, Contractor, Backend Engineering | NodeJS, TypeScript, AWS | Disruptive St[...]

Energy Jobline ZR; City Of London; Remote; GBP 80,000 - 100,000; Full time

Job summary

An innovative tech company is seeking a JavaScript Developer to work remotely on a full-stack team. The ideal candidate will have over 6 years of experience, primarily focused on NodeJS, and a proven track record with B2C startups. Responsibilities include developing backend services, ensuring system reliability, and mentoring junior developers. This is a contract position with a competitive rate of approximately £500 per day.

Qualifications

• 6+ years commercial experience in Backend technologies focused on NodeJS.
• Proven track record of start-up experience with consumer B2C brands.
• Confidence working on huge datasets and complex API work.

Responsibilities

• Develop, maintain, and optimize robust backend services and APIs.
• Design and implement low-latency event processing pipelines.
• Ensure backend infrastructure is reliable, scalable, and secure.
• Conduct code reviews and provide mentorship to junior developers.
• Collaborate with frontend and mobile teams to define API contracts.

Skills

NodeJS

API development

TypeScript

Event processing

Effective communication

Job description

JavaScript Developer, Contractor, Full-stack | NodeJS, TypeScript, React, AWS

Opportunity: We’re supporting an innovative, fast-moving founding team. They’re building an innovative B2C platform with lots of partnerships already signed up! Very exciting opportunity to take a lot of responsibility and work in a small team with proven founders and engineers - on a disruptive and 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.

What You’ll Be Doing

• 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

What You’ll Need

• 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

Location / Employment Details

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

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.