Senior Product Engineer

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

About us and this role

Knapsack is the product company behind Knapsack Pro, a developer-tool that helps engineers optimize CI test runs since 2014. We are a small team located in Kraków (Poland). We mostly work remotely, but meet in person for some of the things.

This is a technical role, but we are looking for someone who is both excited and experienced in working on a product. We value good code and architecture, but they are always means to an end.

Tens of thousands of users rely daily on Knapsack, so you’ll be on the frontline talking with them to ensure their needs are fulfilled.

You’ll take ownership and responsibility for what you build. Everybody on the team responds to support tickets and takes part in Pager Duty.

We expect you to develop complex projects, from ideation and scoping to execution and maintenance. Again, if you're seeking end-to-end ownership, you might have come to the right place!

At Knapsack, it’s not unusual for one person to touch Heroku/AWS, Postgres/Redis, Ruby/Rails, JS/TS, and multiple CIs on the same day. So you should have experience in most and be capable of picking up the rest quickly.

We look forward to hearing from you!

Our recent projects include:

• PREDICT
• Retry-only-Failures
• Rewrite of the API to support tens of millions of test batches per day
• Support for Vitex and Playwright
• Creation and analysis of analytics to evaluate alternative pricing models

About you:

• Seven or more years of professional experience, mainly as a Product/DevTool Engineer.
• Proficiency in crafting pragmatic and performant code where it matters and taking smart shortcuts where appropriate
• Taste in designing public APIs, dev-tools, and User eXperiences
• Data-driven skills to evaluate multiple alternatives and converge on the most promising solution
• Excellent communication in English both in writing and verbally
• The right mix of art & science to deliver projects in an experiment-oriented environment
• Ability to self-direct and manage complex projects
• Comfortable in a fast-paced environment with rapidly changing priorities
• Preferably located in Kraków, Poland

Agreement details:

• B2B contract
• 22-26k PLN net / month
• 20 days off / year
• Pager Duty (compensated)