Node.js
Event-driven services and APIs with explicit failure modes and predictable operations.
Engineering systems.
Built to last._
Senior software engineer helping teams design dependable backends, cloud platforms, and developer-friendly infrastructure.
Warsaw, Poland · working across Europe and remotely
01
Expertise
Kubernetes
Platforms where deployment, traffic, secrets, and observability form one coherent system.
Python
Automation and data tooling that turn repetitive operational work into reliable machinery.
AWS
Architecture decisions made around blast radius, recovery, security, and the monthly bill.
PostgreSQL
Schemas designed as interfaces: correct, evolvable, and explainable under load.
02
Standards
Original proposal author · TC39
New Set methods,
now in ECMAScript.
I originally authored the proposal. It later advanced through TC39 to Stage 4, adding native composition, comparison, and query operations to JavaScript’s Set.
Composition
union intersection difference symmetricDifference
Predicates
isSubsetOf isSupersetOf isDisjointFrom
JavaScript · available in modern engines
const left = new Set([1, 2]);
const right = new Set([2, 3]);
left.union(right);
→ Set(3) { 1, 2, 3 }Stage 4 · added to the specification 7 methods
03
Selected clients
Project work delivered through software houses.
04
Experience
Applandeo
JavaScript Developer
Codete
Node.js Developer
Perform Group
Senior Node.js Developer
Future Mind
Senior Node.js Developer
ION
Senior Software Engineer
Independent engineering
Have a hard problem?
I bring senior backend experience, cloud fluency, and standards work to software that needs careful thinking.