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 language 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 with 2 days in the office (Hayes, London)
* 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