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Software Engineer; Frontend

Job in Leeds, West Yorkshire, ME17, England, UK
Listing for: Heatly
Full Time position
Listed on 2026-02-27
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer, Front End Developer, DevOps
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below
Position: Software Engineer (Frontend)

Experience with NextJS is essential.

Experience with WebGL whilst not essential, would be preferred.

You will sit inside a cross-cutting technical pod, supported by dedicated UI/UX, PMO and Dev Ops roles.

Key Responsibilities Software Development:
  • A keen eye for best-practice interfaces
    Using NextJS, Type Script, React, WebGL and Tailwind we have built a powerful end-to-end energy platform. You will play a key role in integrating new features into our Platform and ensuring they shine. You will work closely with the Platform team and our UX/UI designers to constantly refine the power and journey through our platform.
  • Design and develop software solutions:
    Write clean, maintainable, and efficient code for our platform and applications. This includes developing new features, fixing bugs, and optimising existing code.
  • Implement features and enhancements:
    Collaborate with product managers and other developers to implement new features and improve existing ones. Participate in design discussions and provide input on technical feasibility and best practices.
  • Ensure security by design:
    Integrate security best practices into the development process to ensure that software is secure from the ground up. Conduct regular code reviews and security assessments to identify and mitigate potential vulnerabilities.
  • Optimise for performance and scalability:
    Design and implement solutions that can dynamically scale to meet varying demands and ensure high performance and availability. Use profiling tools to identify performance bottlenecks and optimise code accordingly.
  • Consume APIs and microservices:
    Consume APIs and microservices to support the platform’s functionality. Ensure that APIs are secure, scalable, and well-documented.
Quality Assurance:
  • Conduct code reviews:
    Review code written by other developers to ensure it meets quality and security standards. Provide constructive feedback and suggest improvements.
  • Identify and resolve defects:
    Work closely with developers to identify, document, and resolve software defects. Use bug tracking tools tomanage and prioritise issues.
Agile Development:
  • Participate in agile ceremonies:
    Engage in sprint planning, daily stand- ups, and retrospectives to ensure effective and efficient development cycles. Collaborate with team members to refine requirements, estimate tasks, and plan sprints.
  • Collaborate with cross-functional teams:
    Work closely with product managers, and other developers to deliver high-quality software solutions. Foster a culture of collaboration and knowledge sharing within the team.
  • Continuously improve processes:
    Identify and implement improvements to development and testing processes to increase efficiency and quality. Stay up-to-date with industry best practices and emerging technologies.
Qualifications

Education:

Bachelor’s or Master’s degree in Computer Science or a related field.

Experience:
  • Proven experience as a Software Developer in a tech start-up or fast-paced environment.
  • Experience with NextJS and ideally Tailwind
  • WebGL/three.js experience is highly desirable
  • Strong background in agile development methodologies.
  • Experience with API (RESTful/Sockets/Graph

    QL), microservice architecture and development.
  • Experience with cloud-native platform patterns
Technical

Skills:
  • Extensive knowledge of NextJS, Tailwind a bonus
  • Experience with SQL, including schema design and optimisation
  • Experience with testing frameworks and tools
  • Familiarity with security tools and practices
  • Experience with designing RESTful APIs and microservices.
  • Experience with data scraping, modelling and security
Soft Skills:
  • Excellent problem-solving and analytical skills.
  • Strong communication and collaboration abilities.
  • Ability to work in a fast-paced, dynamic environment and manage multiple priorities.
  • Attention to detail and a proactive approach to identifying and addressing issues.
  • Experience working on mission-critical or SaaS services is desirable
Apply for this role

If you are interested in this position, please send your CV and a short cover letter to  .

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