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Job Description

Senior Software Engineer

Hayes, London

Hybrid

We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you’ll play a key role in driving technical decisions, mentoring teammates, and ensuring best practices across the development lifecycle.

As the UK’s only B Corp Certified salary sacrifice provider, we’re transforming the future of electric vehicle adoption in the UK through salary sacrifice. Building on that success, we’ve launched The Charge Scheme – an innovative benefit allowing employees to save 20–50% on EV charging via salary sacrifice. Voted 4.9 on Glassdoor and certified by Welcome To The Jungle, it’s never been a more exciting time to join!

Key Responsibilities:

Develop, evolve, and maintain our core web application using Ruby, Rails, React, and TypeScript. Collaborate closely with product managers and other stakeholders to deeply understand business needs and translate them into technical solutions. Contribute actively to our technology roadmap and priorities, working alongside your team members, key stakeholders, and leadership. Build a highly automated and reliable platform that serves both our external customers and internal teams. Take on ambiguous or loosely defined problems, analysing them, and proposing effective technical approaches and solutions. Have the opportunity to mentor more junior members as our team grows, sharing your knowledge and fostering a collaborative environment. Drive technical discussions and decisions within the team, ensuring solutions are scalable, maintainable, and align with long-term strategic goals. Champion best practices in areas like system design, performance, security, and operational excellence.

About you:

5+ years of professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills with a willingness to contribute across the full stack Proactive and self-driven, able to take ownership of tasks from conception to deployment. Excellent communication skills, capable of translating complex technical concepts into clear, understandable for non-technical colleagues. Experience with various testing methodologies (e.g., unit, integration, end-to-end) and a commitment to writing well-tested code. A commitment to robust and reliable software delivery, including familiarity with practices like no-downtime deployments, proactive monitoring, and identifying potential risks. Proven ability to lead technical initiatives from concept to completion, often involving multiple team members or complex integrations. Well versed in production operations, incident response, and performance optimisation. You proactively identify and mitigate risks to ensure system stability and scalability.

Benefits:

Hybrid working: Split your week between home and the office, with set in-office days on Mondays and Wednesdays 25 days holiday plus bank holidays Add 1 day holiday per year service + buy / sell up to 5 days each year Flexible work policy with options to take into account family care Best in class Family Friendly Leave and Pay Use our own scheme to lease a vehicle through salary sacrifice and save 40-70% to drive a brand new electric car £500 pa. personal development budget £100 home office budget Bupa healthcare Equity options - own a part of the business

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.