Hybrid Senior Backend Engineer, Models

Posted 2 weeks ago

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About the role

  • Designing and implementing scalable backend solutions that enable the Models platform to handle increasingly complex and nested customer data, directly improving reliability and performance.
  • Addressing technical debt and driving forward-looking architectural changes to support rapid growth and evolving customer needs.
  • Building reusable components and abstractions that accelerate delivery across the group and empower other teams to move faster.
  • Collaborating with cross-functional teams, including those working in Python, Rust and Kotlin, to deliver features that have measurable impact on customer experience and platform adoption.
  • Leading by example in ownership, kindness, and proactive problem-solving, fostering a culture of continuous learning and high performance.
  • Contributing to the rearchitecture of our core model code base, aligning with modern industry standards and preparing the platform for future challenges.

Requirements

  • Architected and delivered complex backend systems with proven experience leading technical initiatives in Python
  • Our teams use a combination of Python, Rust and Kotlin. Expect to be upskilled in Rust if you didn't already use it!
  • Built and deployed cloud applications at scale, demonstrating the ability to deliver robust solutions in production environments.
  • We use AWS with ECS, EC2, Fargate, Lambda
  • Designed and managed complex, arbitrary nested data structures tailored to diverse customer requirements.
  • Demonstrated strong working knowledge of fundamental computer science and software engineering principles, including algorithms, data structures, complexity, design patterns, and architecture.
  • Owned and delivered projects through the complete product development lifecycle, from conception to delivery.
  • Collaborated effectively across teams, driving initiatives that improved scalability, reliability, or delivery speed.

Benefits

  • Share Options at a highly successful Series B company
  • 25 days of non-working + 14 Polish bank holidays
  • £5,000 budget for Learning & Development
  • Mental Health Support and Therapy via Spectrum Life
  • Optional for you: access to Healthcare package provided by Luxmed + Multisport (fully funded by yourself as B2B Contractor)
  • Top-spec laptop (MacOS or Windows)
  • 26 days of holiday + 14 Polish bank holidays
  • Company pension
  • 10 days company sick pay at 100% salary, thereafter in line with labour law
  • Monthly wellbeing allowance via Juno
  • Healthcare package provided by Luxmed
  • Multisport card at Classic level
  • Top-spec work equipment (MacOS / Windows + additional monitors, mechanical keyboards etc)

Job title

Senior Backend Engineer, Models

Job type

Experience level

Senior

Salary

PLN 27,000 - PLN 37,000 per month

Degree requirement

Bachelor's Degree

Location requirements

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