Senior Software Engineer, Front-End Leaning

About us

We're solving AI's hardest problem: alignment.

Encord is the data layer for Physical AI and enterprise, serving as core infrastructure for 300+ of the world's leading AI teams, including Woven by Toyota, Hitachi, Skydio, AbbVie and Dyna, Walden and Agility Robotics. From autonomous vehicles and robotics to sports and healthcare, we're solving AI's hardest problem: turning complex, real-world data into production-ready intelligent systems.

We're a team of founders, scientists, quants, researchers, and former Olympians, who’ve helped build some of the most successful companies in Silicon Valley, and alumni of MIT, Stanford, UC Berkeley, Oxford, Cambridge, and Imperial. We’ve raised $110M from legendary technology investors, early backers of companies like Databricks, ElevenLabs and Vercel, and we’re growing at an extraordinary pace.

We're looking for exceptional people who want to help build a category-defining company, operating with high urgency and taking real ownership to help shape the future of AI.

The role

We're looking for great engineers with experience building complex UIs to help build out our editor interface — the part of our product that lets users visualise and annotate their data. We handle a wide range of data modalities, including image, video, audio, text, PDFs, medical images, and data from LiDAR and other sensors in robots and autonomous vehicles.

For this role, we are particularly looking for engineers who are excited about technically challenging frontend work, such as rendering complex 3D/4D scenes with thousands of objects, combining data from several modalities, all while maintaining high performance in the browser.

You'll join us at a crucial stage of accelerated development, as part of a small, highly collaborative group where you'll be a key driver of progress on a core part of our product — operating with a high degree of autonomy and crafting performant, reliable, and maintainable solutions at speed.

What you'll do

• Build and own complex UI and editor interfaces for visualising and annotating multi-modal data

• Render high-performance 3D/4D scenes with thousands of objects in the browser

• Work across the full stack when needed, from backend services to deployment and styling

• Take end-to-end ownership of projects, from product and architectural decisions through to deployment, monitoring, and measuring user impact

• Collaborate closely with a lean, high-trust team to tackle challenging problems together

• Take initiative, be proactive in problem-solving, and continuously seek improvements

Who we're looking for

• You've seen and built a lot. You have personally developed and maintained multiple systems from scratch, and you know what trade-offs are involved in building reliable, performant software at speed

• You want your work to have a tangible outcome for people. You're not satisfied with building products that do not see the light of day

• You are a builder. You enjoy all aspects of building not only software but a complete product, and are comfortable moving across the stack when necessary.

• You enjoy problem-solving and thinking from first principles, and are always ready to pick up new skills and build quickly

• You're happy to tackle problems without a predefined, clear definition or obvious solution, and are excited to have autonomy to make decisions as you go

• You understand that being a member of a high-performing team requires two things. You contribute your best work and help others contribute their best. You'll always lend a helping hand when needed and level up those around you

Experience requirements

• Strong frontend engineering experience, with production-grade work on complex, high-performance UIs

• Proficiency in TypeScript and React

• Experience with 3D rendering, WebGL, Canvas, or similar browser-based visualisation technologies is a strong plus

• Familiarity with Python and backend development

• Experience with Kubernetes and GCP is a plus

Tech stack

• We are technology agnostic at Encord and not looking for experience across all of these — as long as you're open to learning, please apply.
• Backend: Python and Rust

• Frontend: TypeScript and React

• Deployment: Kubernetes

• Infrastructure: GCP

Why Encord

• Competitive salary and meaningful equity in a high-growth startup

• Strong in-person culture — most of the team works from our London office 4+ days/week

• 25 days annual leave + UK public holidays

• Annual learning & development budget

• Travel for customer visits, events, and conferences across the UK and Europe

• Daily company lunches

• Monthly socials & bi-annual team offsites

Operating principles

High agency

You see something broken, you fix it or find the person who can. We celebrate the people who solve 90% of a problem before anyone asks.

Build with care & urgency

We bear-hug the customer. Former founders and people from fast-moving, high-stakes environments thrive here.

Self-aware & hungry

We stay warm, self-aware, and genuinely hungry. We elevate our peers, and ego doesn't last long.

Invent in real time

We move toward the ambiguity. We’re pragmatic, resourceful, energized by the fact that there's no playbook.

If you're looking to do the most meaningful work of your career alongside people who push you to be better, we'd love to meet you.