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Senior Software Engineer (Infrastructure) at Encord

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Job Title: Senior Software Engineer (Infrastructure)

Company Description: Encord - Series B AI infrastructure startup backed by CRV and Y Combinator

Job Description:
Join a high-performing team building the essential infrastructure for multi-modal AI. You will develop performant, reliable systems to index and curate billions of data items, enabling customers to deploy production-ready machine learning models. This role offers high autonomy to solve complex data challenges using a modern stack including Python, Rust, and Clickhouse.

Location: London, UK

Why this role is remarkable:

  • Work at the frontier of multi-modal AI with a team of veterans and ex-founders backed by $30M in Series B funding from top-tier investors like CRV and Y Combinator.
  • Own mission-critical infrastructure projects end-to-end, from architectural design to deployment, directly impacting the trajectory of a hyper-growth startup.
  • Tackle immense scale challenges involving billions of data points while maintaining a culture that prizes simplicity, high trust, and technical excellence.

What you will do:

  • Architect and scale backend systems using Python and Rust to handle massive volumes of unstructured and structured data for global enterprise customers.
  • Optimize data persistence and retrieval layers leveraging PostgreSQL and column-oriented systems like Clickhouse to ensure lightning-fast query performance at scale.
  • Take full ownership of the development lifecycle, including monitoring and measuring user impact, while collaborating within a lean, high-autonomy engineering group.

The ideal candidate:

  • Proven experience building and maintaining high-performance distributed systems from scratch with a deep understanding of reliability and performance trade-offs.
  • Strong technical proficiency in relational databases (PostgreSQL) and analytics engines (Clickhouse), with an interest in working across Python, Rust, and Kubernetes.
  • A builder mindset with the ability to thrive in uncertain environments, solve problems from first principles, and effectively level up the engineers around them.

Who are Jack & Jill?

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Senior Software Engineer (Infrastructure) at Encord

Jack and Jill AI
London, UK
Full-Time

Published on 03/03/2026

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