Lead Software Engineer
Arondite
Lead Software Engineer
Arondite
Integrates multi-vendor autonomous defense systems
Arondite · London, United Kingdom (Hybrid) · Full-time · Posted 2026-07-09
Workplace: hybrid
Department: Development
Arondite enables organisations to wield autonomy, data and AI at scale. We equip operators with the foundational software to orchestrate their mix of platforms and capabilities, and then take mission-critical decisions faster than their adversaries.
We exist to ensure the UK and its allies out-think, out-pace and out-adapt those who seek to threaten our values and way of life. Our technology is designed for deployment in the world’s most austere environments, and is relied upon by the world’s most demanding operators. We deploy alongside them, bringing our technical expertise wherever it is needed.
You will join Arondite at a pivotal moment in the company’s journey. We are ambitious, building for the long-term and backed by globally renowned investors including Index Ventures (Anthropic, Wiz, Figma, Revolut). Our company is being built by exceptional engineers - people who find high-impact and technically challenging work engaging and exciting, and who consistently deliver outsized impact. You will collaborate with other brilliant minds to solve some of the world’s hardest and most important problems.
You will have ownership and autonomy from Day One. There is no corporate ladder at Arondite. From your first day, you will directly influence the design, functionality, and direction of Arondite’s product offering. We hire the best people and give them extremely high levels of autonomy; the sky is the limit for an individual with the right ambition.
If you are motivated by our mission and if you want to be part of a growing team of outstanding people, then we want to hear from you.
As Lead Software Engineer at Arondite you will be responsible for the success of an area of our enterprise software product, Cobalt. The role gives you the opportunity to combine software development with leadership of highly talented engineers and designers. You will divide your time between architecting and writing software yourself, and supporting and mentoring other engineers. You will also be able to influence the product roadmap and help scale our world-class engineering function.
You will need to understand how our enterprise software product is used by people (and with hardware) in the real world. There are opportunities at Arondite covering front-end, back-end and full-stack. Wherever you focus, you will work closely with product managers, product designers, other engineers and team leads to meet important customer deadlines for our mission critical software.
Your responsibilities will include:
We are looking for candidates with experience across the development stack, from frontend UX experts who delight in producing a polished and beautiful experience, to networking maestros who understand and optimise the complex topology required to support our platform (and everything in-between).
Arondite aims to bring together individuals from diverse backgrounds and with different perspectives. We therefore don’t expect people to have experience across every area of the requirements. Please apply even if you only partially fulfil the following lists.
You should have:
Strong core programming skills in either (or both!):
Server-side languages such as C++, Java, Rust or Python
Front-end development in TypeScript or JavaScript, using frameworks such as Angular or React
Several years of software engineering experience in industry
Ideally, you would also have:
This is not an additional list of requirements; this reflects the tech stack currently used at Arondite; any experience in these areas is a bonus
Right to Work
We require that all candidates have an existing Right to Work in the UK at the time of application.
Security clearance
We believe in working closely with defence customers. As a result, this role will require the individual to hold a clearance or be willing to undergo UK security vetting to Security Check (SC) or above. This normally requires having continuous residency in the UK for at least 5 years.
Office vs Hybrid working
We are focused on building a positive, collaborative engineering-driven culture. We therefore believe in making the office a friendly, comfortable and fun place to be, and we try to work from the office where possible. Of course, there are times when it makes sense for you to work from home and that's OK. You may also need to travel to visit customers, depending on your role. But in general you should only apply to join Arondite if you're excited to come into the office and work in person by default.
Application process
Following a welcome call with the Talent team, our interview process for this role is typically:
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Arondite builds a software platform called Cobalt that connects and manages autonomous systems from different manufacturers through a hardware-agnostic layer, unifying drones, robots, and sensors under one cockpit. It uses machine learning to process data from various assets and deliver real-time analytics to operators, enabling better decision-making and sensor fusion without needing new hardware. Unlike rivals that push specific hardware ecosystems, Arondite focuses on software interoperability to wire diverse systems together for defense, critical infrastructure, and security uses. Its goal is to improve operator decision-making, efficiency, and safety by enabling seamless interoperability across multiple vendors and use cases.
Explore more opportunities at Arondite