Software Engineer

Software Engineer

Department: Factor

Employment Type: Permanent - Full Time

Location: London, UK

Description

At Factor, we’re building the commercialisation layer for the new energy economy. Our engineers don’t just write code — they shape the foundations of a platform designed to transform how energy is priced, forecast, and delivered globally.

As an engineer, you will play a pivotal role in developing the core of our system: scalable data pipelines, pricing engines, and APIs that support real‑time decision making for energy retailers and their customers. You’ll work in a highly capable senior team, where ownership, curiosity, and engineering excellence are expected — and where AI tools are used daily to multiply impact and velocity.

Your Key Responsibilities

• Build and ship backend features and services with a focus on elegance, scalability, performance, and resilience.


• Design and evolve Factor’s core data and application architecture (Typescript rust, AWS, etc).


• Solve complex, end‑to‑end problems across the stack, from data ingestion and transformation, complex algorithms, through to APIs and partner integrations


• Contribute to engineering standards, peer reviews, and design discussions that raise the technical bar.


• Use AI and automation to accelerate development cycles, testing, and deployment.


• Help shape a culture of technical excellence, collaboration, and high ownership.

What We’re Looking For:

• Proficiency in Node.js, Python, PostgreSQL, and modern cloud architecture (AWS, serverless).


• Track record of designing and maintaining clean, maintainable systems that handle complex data and business logic.


• Experience in the energy sector (or other data-heavy, mission‑critical industries) is highly valued.


• Comfortable working autonomously in a fast‑moving startup environment; proactive in surfacing problems and proposing solutions.


• Thrives on responsibility and ownership, with a low‑ego, high‑collaboration style.


• Excited by the opportunity to apply your skills to one of the world’s biggest challenges: the energy transition.

What We Can Offer You

• Competitive salary


• Private medical insurance


• Life and income protection


• 24-days annual leave


• Enhanced parental leave


• Tailored learning and development opportunities


• Flexible working hours and remote‑work opportunities