Senior DevTools Product Engineer - End-to-End Ownership

Knapsack; Kraków; Hybrid; PLN 246,000 - 290,000; Full time

Benefits offered by this job

Pager Duty (compensated)

Job summary

Knapsack is a product company behind Knapsack Pro, a developer-tool that helps engineers optimize CI test runs. We are a small team based in Kraków, Poland, with a largely remote workflow and occasional in-person meetups.

You will own complex product initiatives, contribute to API design and DevTools, and engage directly with thousands of users daily. The role is technical, emphasizes end-to-end ownership, and requires strong architectural thinking, data-driven decision making, and excellent

Qualifications

• Seven+ years of professional experience as a Product/DevTool Engineer.
• Proficiency in crafting pragmatic and performant code.
• Taste in designing public APIs, dev-tools, and UX.
• Data-driven skills to evaluate alternatives and converge on solution.
• Excellent English communication (written and spoken).
• Ability to self-direct and manage complex projects.

Responsibilities

• Be on the frontline talking with users to understand needs and drive improvements.
• Take ownership and responsibility for what you build from ideation to maintenance.
• Respond to support tickets and participate in Pager Duty.
• Develop complex projects across multiple stacks and CIs as needed.
• Sketch, scope, and execute end-to-end product initiatives.

Skills

Product Engineer

Public API design

Data-driven decisions

English communication

Self-directed

Team collaboration

Architectural thinking

Public API design

Tools

Heroku/AWS

Ruby/Rails

JS/TS

Postgres/Redis

CI systems

Job description

Knapsack is a product company behind Knapsack Pro, a developer-tool that helps engineers optimize CI test runs. We are a small team based in Kraków, Poland, with a largely remote workflow and occasional in-person meetups.

You will own complex product initiatives, contribute to API design and DevTools, and engage directly with thousands of users daily. The role is technical, emphasizes end-to-end ownership, and requires strong architectural thinking, data-driven decision making, and excellent