Software Engineer, Data Workflows (Human-in-the-Loop Systems)
Encord
Software Engineering
London, UK
Posted on Apr 14, 2026
About us:
Encord is the universal data layer for AI, helping 300+ teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle.Trusted by Woven by Toyota, AXA, UiPath, Zipline, and more. We’re a team of 100+ operating at the frontier of AI, backed by $60M in Series C funding from Wellington Management, CRV, Next47, and Y Combinator.
The role:
We are hiring a Software Engineer to build systems that power real-world AI data workflows.This role sits at the intersection of product engineering and applied problem solving. You will work directly with client-facing teams to design and implement solutions that improve how data is processed, annotated, and evaluated in production.
Encord is the universal data layer for AI, helping 300+ teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle.Trusted by Woven by Toyota, AXA, UiPath, Zipline, and more. We’re a team of 100+ operating at the frontier of AI, backed by $60M in Series C funding from Wellington Management, CRV, Next47, and Y Combinator.
The role:
We are hiring a Software Engineer to build systems that power real-world AI data workflows.This role sits at the intersection of product engineering and applied problem solving. You will work directly with client-facing teams to design and implement solutions that improve how data is processed, annotated, and evaluated in production.
This is a unique role: the code you write will directly impact customer outcomes — from annotation quality to the accuracy of the metrics we report every day. You won’t be working in isolation; you’ll be solving live problems that affect active deployments.
What you’ll do:
What you’ll do:
- Build production-grade automation and services using Encord’s SDK
- Identify bottlenecks in data workflows and implement scalable backend solutions
- Contribute to Encord’s core codebase (APIs, services, infrastructure) to support new use cases
- Work directly with client-facing teams to debug, iterate, and ship solutions in real time
- Improve data quality, consistency, and metric accuracy through robust tooling
- Design systems that move from one-off fixes to reusable abstractions
- Own problems end-to-end — from investigation to deployment and monitoring
Who we’re looking for:
- Strong software engineer with a bias for shipping and ownership
- Comfortable working on real-world systems with imperfect inputs and constraints
- Able to move quickly without sacrificing code quality
- Interested in building systems that directly impact users and business outcomes
- Effective collaborator across engineering, operations, and client-facing teams
Experience requirements:
- 1+ years of software engineering experience
- Strong backend fundamentals (Python preferred)
- Experience building APIs, services, or automation pipelines in production
- Comfortable contributing to shared codebases (PRs, reviews, production systems)
- Familiarity with cloud environments (GCP, AWS, or Azure)
- Ability to debug and extend existing systems quickly
Bonus:
- Experience with data pipelines, ML infrastructure, or evaluation systems
- Exposure to human-in-the-loop workflows or annotation systems
- Familiarity with Kubernetes, Docker, or distributed systems
- Experience in high-velocity, customer-facing engineering environments
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
- Company lunches twice a week
- Monthly socials & bi-annual team offsites