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  • Problem solving
  • Clean code
  • Performance
  • Innovation
  • Collaboration
PL

Jakub Mikołajek

Software Engineer

Useful software.
Clear systems

Product interfaces in React and Swift. Service and tooling layers in TypeScript, NestJS and Rust.

I focus on product interfaces with React and Swift.
Node, NestJS, TypeScript and Rust shape the service and tooling layer.
 Turning complex ideas into software I can explain, maintain and improve.

Explore selected work
Scroll to trace the system

Six modules.
One product system.

Product UI, service layer and tooling core areas. Each layer stays independently useful, while the full value appears in the connections between them.

Explore the system
Backend EngineActive
Frontend InterfaceActive
Mobile LayerActive
AI CoreHobby
Systems ForgeProcessing
InfrastructureHobby

Projects with
a point of view.

Product work, developer tooling and research systems — presented through the decisions and constraints that made them useful.

Browse all case studies

Open source

Read case study

Codex Skills Collection

Open-source multi-agent workflow system for Codex, built to make research, planning, implementation and review repeatable across delivery teams.
  • Codex
  • Agent workflows
  • Markdown
  1. 01Operating model
  2. 02Context discipline
  3. 03Adoption

>./case-studies/codex-skillsready

Stack
4 technologies
Scope
3 chapters

From support routines
to product systems.

Building product interfaces with React and Swift, service layers with Node/NestJS/TypeScript, and tooling/runtime systems with Rust.

Follow the full journey
  1. 2022FoundationPHASE 01
  2. 2023Systems thinkingPHASE 02
  3. 2024Product deliveryPHASE 03
  4. 2025Native directionPHASE 04
  5. NowTechnology growthCURRENT VECTOR

Let's make the next thing clearer.

Have a product, service, or developer tool that needs a clear technical shape? Start the conversation here.

Open contact channel
A practical first messageONLINE

> resolving direct channel...

> location: Poland

> email: jakub.mikolajek.work@gmail.com

> status: ready