Software Engineer (Full Stack) - Renewable Energy Tech in Bristol

As a Software Engineer at Renewable Exchange, you will be at the heart of the energy transition. You’ll build and scale the infrastructure that allows renewable energy generators to optimise their returns and helps the grid go green. You aren’t just writing code; you’re building the liquidity layer for the net‑zero economy.

Tasks

• Full-System Understanding: You are at your best when ensuring the entire system is working seamlessly. You understand the "why" behind every line of code, from how a user interacts with the PPA marketplace to how that data is persisted, scaled, and protected in the cloud. We are looking for an engineer who prioritises system-wide reliability and data integrity, ensuring our pricing models perform flawlessly under real‑world conditions.
• Architectural Evolution & Infrastructure: Design and evolve resilient, distributed services with a focus on Infrastructure as Code (IaC). You will manage cloud resources to ensure the platform stability and performance.
• Operational Excellence: Advocate for CI/CD best practices, automated testing, proactive monitoring and observability to keep our platform "always on" and be quick to diagnose and resolve any issues that do occur.
• AI: Propose solutions to utilise AI in production environments to improve workflows and enhance products whilst maintaining system robustness and accuracy.
• Data Integrity: Ensure our energy pricing models and transaction data are processed with 100% accuracy—precision is non-negotiable in energy trading.
• Mentorship: Act as a technical pillar for the team, conducting thoughtful code reviews and leveling up peers.
• Feature Ownership: Lead the design and implementation of complex features across our PPA marketplace and data analytics tools.

Requirements

• Key Attributes

• Problem Solver: You enjoy untangling the "messy" data inherent in the energy sector.
• Pragmatist: You know when to build the "perfect" solution and when to ship a "good" one to meet market demands.
• Collaborator: You can explain technical debt to a Product Manager and market volatility to a Junior Dev.

• 5+ years experience
• Strong software engineering fundamentals (testing, debugging, performance, maintainability)
• Experience designing and building scalable backend systems
• Uses AI tools to accelerate development while maintaining rigorous standards for correctness, security, and maintainability
• Able to identify subtle bugs, edge cases, and architectural issues in AI-generated code

• Experience building APIs and services (TypeScript and/or Python)
• Familiarity with GraphQL APIs

• Experience working with cloud infrastructure (preferably AWS), including services such as Lambda, S3, API Gateway, ECS
• Infrastructure as Code (Terraform)
• CI/CD pipelines (CircleCI)

• Experience with relational databases (PostgreSQL)
• Exposure to graph databases (Neo4j)
• Experience ingesting and processing external data sources is a plus
• Familiarity with modern data tooling (e.g., dbt, DuckDB)

• Experience with modern frontend frameworks (Next.js, React)

Benefits

• Performance bonus scheme
• 25 days’ annual leave, plus bank holidays with the option to buy back a further 5 extra annual leave days p.a.
• Private health insurance provided by Vitality.
• A positive and supportive work culture with regular team events, incentives, social activities and good work‑life balance
• 1 extra day of annual leave for every year of service after 5 years, up to a maximum of 5 extra days.
• 3 month sabbatical after 4 years of service!
• Enhanced parental leave policies; maternity & adoption (12 weeks at full pay, followed by SMP entitlement), paternity/partner (6 weeks at full pay to take at any point during the first year of your child’s life), shared parental leave.
• Salary sacrifice scheme for electric cars and cycle to work available.
• An annual allowance of £100 to spend as you see fit towards your professional development plus access to other professional development resources.
• Group pension scheme.
• Convenient central Bristol office location with bike storage and shower facilities.

At Renewable Exchange we are committed to Diversity, Equity and Inclusion. We encourage people from every diverse background to apply; even if you aren’t sure if you meet all of the criteria we would love to hear from you!