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- Tasks: Build mission-critical full-stack systems and deploy secure cloud infrastructure.
- Company: Join Sweep, a pioneering tech company redefining cyber-physical security.
- Benefits: Competitive salary up to $220,000, equity, premium insurance, and individual benefits.
- Why this job: Be one of the first engineers shaping the future of AI defence technology.
- Qualifications: 5+ years in software development with expertise in JS, Python, and cloud deployment.
- Other info: Dynamic team culture with opportunities for global travel and impactful projects.
The predicted salary is between 43200 - 72000 £ per year.
We’re building humanity’s defense layer for the AI age and are looking for a hacker-minded Full Stack Engineer to ship from day one and own problems end-to-end. If you want to invent new categories, not just improve existing ones—this is that role.
As intelligent machines proliferate into every part of the physical world, humans still lack a defense layer to ensure the systems and devices we rely on remain aligned with us. Sweep is building that layer today. Our tech is already deployed alongside some of the world’s highest-stakes teams—from decision-makers and elite market-movers to frontline journalists, chart-topping artists, record-breaking athletes, and history-bending scientists. What we learn there becomes the foundation for a civilization-defining capability.
We’re a small, talent-dense team with a bias for high ownership, high velocity, and low ego. We care deeply, move fast, and are here to build something that outlives us. Together, we’ll redefine cyber-physical security for the AI age.
What makes this role special?
- Gain pre-Series A ownership as one of the first 10 engineers defining architecture, standards, and culture.
- Build software that leaves the lab and survives contact with reality.
- Influence core product direction and technical roadmap from day one.
- Operate with Bletchley-Park intensity—rapid feedback, real consequences, and ship prod in places you might never discuss, but will never forget.
- Partner with elite teams confronting never-seen-before cyber risks.
What we’re looking for
- Polyglot developer (JS, Python, Rust/Go a plus) who rapidly picks up new languages.
- Deep cloud expertise (AWS/GCP) in secure, scalable deployment.
- 5+ years shipping systems that cannot fail production code.
- Worked with LLMs, vector databases, and prompt pipelines.
- Startup urgency: Independent, accountable, relentless execution.
- U.S. Person status required (may involve export-controlled data).
Bonus if you’ve
- Developed iOS apps.
- Tinkered with IoT or spatial computing (BLE/WiFi, AR/VR).
- Obsess over code-quality (SonarQube or similar).
- Built secure operational dashboards or admin workflows.
- Optimized database performance under scale.
What you’ll do
- Build mission-critical full-stack systems across backend, web, and mobile.
- Deploy secure cloud infrastructure (AWS/GCP) and edge AI for real-time defense.
- Integrate LLMs, graph reasoning, and sensor fusion into production systems.
- Own reliability through testing, automation, and tight feedback loops.
- Work directly with elite users globally (~10–15% travel).
How we select
- Short application
- 20-minute intro call
- Technical deep-dive
- Show us something you’ve built that makes you proud
- References and offer
Final facts.
- Base salary up to $220,000, depending on experience and impact.
- Total compensation includes equity, premium insurance, and individual benefits.
- You’ll join us on-site at our NYC HQ or at our launchpad in Washington, DC.
Apply. Make history. Build humanity’s defense against machines.
Software Engineer, Full Stack in London employer: Sweep360
Contact Detail:
Sweep360 Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Software Engineer, Full Stack in London
✨Tip Number 1
Get your hands dirty with coding challenges! Before you even step into an interview, practice solving real-world problems. Websites like LeetCode or HackerRank can help you sharpen those skills and show off your hacker mindset.
✨Tip Number 2
Network like a pro! Connect with current employees on LinkedIn or attend tech meetups. Having a chat with someone already in the company can give you insider info and might just get your foot in the door.
✨Tip Number 3
Show us what you’ve built! When you get that chance to present your work, make it count. Whether it's a personal project or something from your last job, highlight how it aligns with our mission of redefining cyber-physical security.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in being part of our team at Sweep.
We think you need these skills to ace Software Engineer, Full Stack in London
Some tips for your application 🫡
Show Your Passion: When you're writing your application, let your enthusiasm for the role shine through! We want to see that you’re not just looking for any job, but that you’re genuinely excited about building humanity’s defence layer in the AI age.
Tailor Your Experience: Make sure to highlight your relevant experience and skills that align with what we’re looking for. If you've worked with LLMs or have cloud expertise, shout about it! We love seeing how your background fits into our mission.
Be Authentic: We value low ego and high ownership, so don’t be afraid to show your true self in your application. Share your unique journey, challenges you've faced, and how you've overcome them. We’re all about real stories!
Apply Through Our Website: To make sure your application gets the attention it deserves, apply directly through our website. It’s the best way for us to see your application and get you on the path to joining our talented team!
How to prepare for a job interview at Sweep360
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, like JavaScript, Python, and cloud platforms like AWS or GCP. Brush up on your knowledge of LLMs and vector databases, as these are crucial for the role.
✨Showcase Your Projects
Prepare to discuss specific projects you’ve worked on that demonstrate your ability to ship production code. Bring examples that highlight your problem-solving skills and how you’ve tackled challenges in real-world scenarios.
✨Emphasise Ownership and Accountability
This role requires a high level of ownership, so be ready to share experiences where you took charge of a project from start to finish. Talk about how you ensured reliability and quality in your work, especially under pressure.
✨Cultural Fit Matters
Sweep values low ego and high velocity, so convey your ability to work collaboratively in a small team. Share instances where you’ve contributed to a positive team culture and how you handle feedback and rapid iterations.
