Senior Product Engineer (React, TypeScript, .NET)

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PublinkGovTech SaaS

Locations: Poznań, Wierzbięcice 1A, Katowice, Warszawa, Kraków, Wrocław, Poznań, Country code: PL; Elastyczny tryb współpracy: zdalnie lub hybrydowoContractSenior

Salary25000 - 30000 PLN per month b2b currencySource=original; 5730 - 6876 EUR per month b2b currencySource=conversion; 5426 - 6511 CHF per month b2b currencySource=conversion; 4908 - 5889 GBP per month b2b currencySource=conversion; 6574 - 7889 USD per month b2b currencySource=conversion

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Job Details

Languages: Pl C2, en B2
Experience: 6+ lat komercyjnego doświadczenia jako fullstack engineer
Required Skills: Microsoft SQL ServerTypeScriptAzure.NET coreReact

Requirements

Have 6+ years of commercial full-stack engineering experience, with production experience on both backend and frontend.
Demonstrate product ownership, including involvement in decisions about what to build and examples of deciding not to build a feature.
Define feature success metrics in advance, using leading indicators tied to business outcomes.
Use Amplitude and a product database to gather and connect data for prioritization discussions.
Write ADRs with options, criteria, and recommendations before implementing major changes.
Have practical experience with DDD and bounded contexts, and knowledge of CQRS, Event Sourcing, sagas, outbox patterns, and idempotency keys.
Use .NET Core or ASP.NET Core, EF Core, and MediatR or an equivalent command/query pattern.
Use MS SQL Server, including reading execution plans and making informed indexing decisions.
Build frontend applications with React and TypeScript, and use a state-management option such as Redux, Zustand, or Jotai.
Work with Azure, including App Service, Application Insights, and Service Bus.
Understand production operations, including SLOs/SLIs, structured logging, KQL, distributed tracing, on-call, and runbooks.
Work with CI/CD pipelines, unit, integration, and E2E testing, and feature flags or staged deployment approaches.
Use Claude Code, Cursor, or an equivalent AI tool daily.

Responsibilities

Partner with a Product Builder to take product work from hypotheses through delivery and production value.
Define success metrics before implementation and use Amplitude and product database data to inform priorities.
Write ADRs with options, criteria, and recommendations before major changes.
Design bounded contexts and integrations, and plan versioned, backward-compatible APIs and phased migrations.
Operate features through deployment and monitoring, including SLOs/SLIs, structured logging, dashboards, on-call, runbooks, and post-mortems.
Build and maintain backend and frontend features using the production stack.
Modify CI/CD pipelines and choose test coverage across unit, integration, and E2E tests based on risk.
Use feature flags, canary deployments, or dark launches for risky changes.
Contribute to platform architecture, cross-module product decisions, bounded-context maps, and platform conventions.

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