Backend Engineer

Seamflow; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A cutting-edge tech startup in Greater London seeks a talented engineer to join their team. The role involves taking ownership of code from day one, solving complex challenges, and working in a high-paced environment. Candidates are expected to have strong backend engineering skills and experience with technologies like AWS and Python. The position offers a competitive salary starting at £100k, equity, and a supportive team culture.

Benefits

Relocation assistance

Team meals

Visas sponsored

Competitive equity

Qualifications

• 2+ years as an engineer with a track record of fast, production-grade code.
• Strong experience designing and building APIs, distributed systems, and production-grade services.
• Experience with relational databases, graph databases, containerization, and cloud infrastructure.

Responsibilities

• Deploy to production from day 1 and take ownership for code.
• Create specs, figure things out, and build features end-to-end.
• Solve problems from scaling infra to hiring and customer interaction.

Skills

Problem solving

Ownership

Production-grade code shipping

Backend engineering

Infra engineering

Tools

AWS

Pulumi

Python

TypeScript

Go

Rust

Job description

About Seamflow

We’re removing one of the last great barriers to progress in the physical world. While software moves fast, industries like aerospace, healthcare, and energy are still slowed by outdated, manual systems.

• Rapidly growing in stealth with 6 figure revenue in 3 months
• Raised a 14x oversubscribed $4.5m seed round from Tier 1 VCs - Coinbase, Reddit, Klarna, Spotify
• This is a once-in-a-generation shot to define how humanity brings new ideas into the real world. We’re going to take the opportunity by moving fast, working with intensity, and executing without compromise.

Who we are looking for

• Problem Solver - You love solving hard problems (proven history of doing so).
• Ownership & Intensity - You take charge and force things into existence. Bonus if you’ve founded something yourself / joined a startup as an early member.
• Proven Builder - 2+ years as an engineer with a track record of fast, production‑grade code shipping.
• Backend Engineering – Strong experience designing and building APIs, distributed systems, and production‑grade services in Python/TypeScript/Go/Rust (or similar).
• Infra Engineering - Experience with relational databases, graph databases, containerization, and cloud infrastructure. AWS + Pulumi preferred.

Your First Month at Seamflow

• Ship from Day 1 - You deploy to production day 1 and take ownership for code.
• Own it - You create specs, figure things out, and build features end‑to‑end.
• Solve Every Problem - From scaling infra to hiring the next teammate to jumping on customer calls, you do what needs doing.

We Offer

• Pace & Purpose: We work 6 days a week, together in London (in‑person, we sponsor visas), because we don’t want to look back and think we could’ve pushed harder.
• Top‑of‑Market Reward: Base Salary (minimum £100k) + meaningful equity and the chance to do career‑defining work.
• No Friction: We cover relocation, visas, team meals, and whatever tools or resources you need to move fast.
• A Tight‑Knit Team: We work hard because we care, but we also laugh a lot, eat together, and back each other completely. Everyone here is here because they want to build something meaningful, with people they genuinely like.