Senior Software Engineer

she does data.; Greater London; Remote; GBP 81,000 - 99,000; Full time

Job summary

A mission-driven tech scale-up is seeking a Senior Backend Engineer to design, build, and scale their core software platform. This hands-on role involves creating backend services in Python and improving system performance while collaborating with a high-performing team. The ideal candidate has strong experience in developing production systems and APIs, enjoys a fast-paced startup environment, and is passionate about sustainability. This remote-first position offers a salary up to £90,000 plus equity and requires occasional team meetings in London.

Qualifications

• Strong experience building production backend systems in Python.
• Experience designing and maintaining scalable APIs and services.
• Experience working with cloud infrastructure (AWS preferred).

Responsibilities

• Designing and building robust backend services and APIs in Python.
• Developing production-grade systems that power core platform functionality.
• Improving system performance, reliability and scalability.
• Building integrations with external systems and partner APIs.
• Contributing to architecture decisions and engineering best practices.

Skills

Production backend systems in Python

Designing scalable APIs

Cloud infrastructure (AWS)

Docker

Clean code practices

Job description

A fast-growing, mission-driven tech scale-up is hiring a Senior Backend Engineer to help build and scale the core software platform powering their technology.

The company is developing tools that help transform agriculture globally. Their platform helps farmers make better decisions that improve yields while reducing environmental impact. It is a genuine tech for good mission focused on sustainability and food security.

You will join a small, high-performing engineering team working closely with the CTO, helping design, build and scale the production systems that underpin the platform. This is a hands‑on software engineering role with real ownership, where you will contribute to architecture, performance and reliability as the product continues to grow.

What you’ll be doing

• Designing and building robust backend services and APIs in Python
• Developing production‑grade systems that power core platform functionality
• Improving system performance, reliability and scalability
• Building integrations with external systems and partner APIs
• Contributing to architecture decisions and engineering best practices
• Collaborating closely with engineers and product teams to ship high‑quality features

What they’re looking for

• Strong experience building production backend systems in Python
• Experience designing and maintaining scalable APIs and services
• Experience working with cloud infrastructure (AWS preferred)
• Familiarity with Docker and modern deployment workflows
• Strong focus on clean, maintainable and reliable production code
• Comfortable working in a fast-moving startup environment
• Mission‑driven technology tackling sustainability challenges
• Join a well‑funded scale‑up at a pivotal growth stage
• Work with a smart, ambitious engineering team
• Up to £90,000 salary plus meaningful equity
• Remote‑first, with the team meeting once per month in London

This is a really cool and unique gig!

Diversity & Inclusion

Mirai believes in the power of diversity and the importance of an inclusive culture. It welcomes applications from individuals of all backgrounds, understanding that a range of perspectives strengthens both its team and its partners’ teams. This is just one of the ways they’re taking positive action to shape a collaborative and diverse future in the workplace