Skip to main content

Senior Software Engineer in City of London

Energy Jobline is the largest and fastest growing global Energy Job Board and Energy Hub. We have an audience reach of over 7 million energy professionals, 400,000+ monthly advertised global energy and engineering jobs, and work with the leading energy companies worldwide.

We focus on the Oil & Gas, Renewables, Engineering, Power, and Nuclear markets as well as emerging technologies in EV, Battery, and Fusion. We are committed to ensuring that we offer the most exciting career opportunities from around the world for our jobseekers.

Job Description

Senior Full-Stack Software Engineer


-London (3 days a week)

-up to £125K + options


An early-stage B2B SaaS company seeks a Lead Software Engineer to join their London based team. The role requires significant experience across Full-stack Engineering in addition to experience leading software engineers.


The company is an AI-first B2B business that transforms the way businesses operate. It has raised early-stage funding and built a team of 10 to deliver against this mission. The team come from some of the UK’s most exciting technology scale-ups and are well placed to execute.


The role requires significant Full-Stack Engineering experience, including the backend, frontend and platform. It’s responsible for leading other engineers while remaining fully hands-on as an engineer. It will not suit someone who has formally managed teams and not been hands-on.


The stack includes Python, although they would like someone who has worked with multiple and has an open mind to finding the best technologies to solve their customers’ problems.


About you:

We’re looking for a hands-on Full-Stack Software Engineer who has experience leading teams of engineers within early-stage and scale-up technology companies, ideally in the B2B or SaaS categories. You will have experience in advising on a company’s technical roadmap, including critical decisions around building vs buying technology. You must thrive in an environment where you work closely with customers - those actually using the product - and relish in receiving their feedback. A strong communicator is needed here.


The tech:

You will be competent in the following technical areas:

-Python (incl. FastAPI and/or Django) and other backend (Rust, Ruby, Go etc.)

-Frontend (React, Typescript)

-APIs (design, development and standards)

-Database (design, performance optimisation and for scale)

-Infrastructure (CI/CD pipelines, cloud)


The company requires you to work in their office 3-days a week and cannot offer sponsorship.

This is an equal opportunity employer.


Senior Full-Stack Software Engineer

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.

Senior Software Engineer in City of London

City of London, UK
Full time

Published on 11/06/2025

Share this job now