At a Glance
- Tasks: Build and ship scalable backend features for an AI-driven energy platform.
- Company: Join a dynamic team at Factor, part of Gentrack Group Ltd.
- Benefits: Enjoy competitive salary, private medical insurance, and flexible working hours.
- Other info: Collaborative culture with excellent career growth opportunities.
- Why this job: Make a real impact on the energy transition while working with cutting-edge technology.
- Qualifications: Proficiency in Node.js, Python, and modern cloud architecture required.
The predicted salary is between 63000 - 77000 £ per year.
Factor is an API driven, AI powered retail data platform for global energy utilities. We use deep machine learning to help energy retailers accurately value the energy they sell: improving margins, unlocking more competitive customer products, and driving lower carbon emissions. We believe that great environmental outcomes come from smarter commercial models, and we earn our clients’ loyalty by helping them do good and do well.
We are a small, senior team that moves fast by collaborating, not following rulebooks. Headquartered in New Zealand, we’re building a global business; working remotely, flexibly, and across time zones to support our partners and clients. Factor was acquired by Gentrack Group Ltd in May 2026. We operate as a division inside the Group, collaborating with our Gentrack colleagues to win new business and support Group customers. We also sell Factor independently, integrating with other software in the energy ecosystem.
At Factor, we’re building the commercialisation layer for the new energy economy. Our engineers shape the foundations of a platform designed to transform how energy is priced, forecast, and delivered globally. As a senior 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 environment where engineering excellence is 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
To discover more about Gentrack and how we’re transforming energy and water utilities with innovative solutions, please visit our website and LinkedIn.
Software Engineer - Senior employer: Gentrack
As an EMEA Payroll Specialist at our London office, you will join a dynamic and supportive work culture that prioritises employee well-being and professional growth. We offer competitive salaries, private medical insurance, and tailored learning opportunities, all while fostering a collaborative environment where your contributions to payroll management and continuous improvement are valued. With flexible working hours and a commitment to innovation, we empower our employees to thrive both personally and professionally.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer - Senior
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Gentrack or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Gentrack.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Gentrack.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Gentrack that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Software Engineer - Senior
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Gentrack.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Gentrack and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Gentrack
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Gentrack uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
