Senior Software Engineer

Location: Millwall

Contract type:
Permanent

Hours:

37.5/ week Salary: circa £70,000 depending on experience

Location:

London, Canary Wharf WFH policy:
Employees are required to attend the office 2 days/week Flexible working :
Variety of flexible work patterns subject to line manager discretion e.g. Compressed 9-day fortnight.

Reports to:

Software Engineering Manager Deadline

Note:

We reserve the right to close the advert before the advertised deadline if there are a high volume of applications. Role

Summary:

Were looking for a Senior Software Engineer to join our Settlement Systems team, part of a broader engineering space that delivers critical systems to help the UK achieve Net Zero by 2050. Our digital platform underpins multiple applications, including settlement tools, forecasting engines, calculation services, and data portals that enable the business to meet this ambitious goal. As a technical leader, you will collaborate with Senior Software Engineers to define system architecture, mentor team members, and champion engineering best practices, while remaining actively involved in hands-on development.

Although this role does not include direct line management, it requires strong technical leadership and the ability to guide the team through complex challenges.

Key Responsibilities Design, develop, and maintain scalable and reliable software solutions, ensuring alignment with Principals and Architects. Collaborate with cross-functional teams, including Product, QA, and Dev Ops, to deliver high-quality features. Lead code reviews and technical discussions, and contribute to architectural decisions. Lead complex coding tasks; ensure code quality Identify and resolve performance and scalability issues. Write clean, maintainable, and well-documented code.

Mentor and support junior and mid-level engineers. Stay current with emerging technologies and industry trends. Estimate work; lead delivery of features from the roadmap. Solve ambiguous problems with scalable solutions. Skills Knowledge and Expertise Essential:
Strong expertise in Python web development frameworks (e.g., Django) and JavaScript/Type Script, with experience working in cloud environments such as AWS, Azure, or GCP. Skilled in applying software technical design principles to build scalable, secure, and maintainable solutions within modern cloud-based architectures. Bachelors or Masters degree in Computer Science, Engineering or equivalent experience.

Experience with CI/CD tools and practices. Strong problem-solving & communication skills Adaptability/willingness to learn (e.g., Agile) Technical leadership (mentoring, best-practice guidance) Desirable:

Experience with modern frameworks and libraries (e.g., React, Node.js, Terraform, Celery)

Experience with database schema design and query optimisation Employee Benefits As if contributing to and supporting work that makes life better for millions wasnt rewarding enough, we offer a full range of benefits too. Key benefits that may be available depending on the role include:
Annual performance based bonus, up to 10% 25 days annual leave, plus eight bank holidays Up to 8% pension contribution Financial support and time off for study relevant to your role, plus a professional membership subscription Employee referral scheme (up to £1500), and colleague recognition scheme Family friendly policies, including enhanced maternity leave and shared parental leave Free, confidential employee assistance, including financial management, family care, mental health, and on-call GP service Three paid volunteering days a year Season ticket loan and cycle to work schemes Family savings on days out and English Heritage, gym discounts, cash back and discounts at selected retailers Employee resource groups About Low Carbon Contracts Company The Low Carbon Contracts Company (LCCC) exists to help decarbonise the generation of electricity and make it more affordable for the future.

Our work is central to the delivery of the Governments objective to achieve Net Zero target by 2050.