Krzysztof Kobyliński

Technical Architect

Krzysztof Kobyliński

Technical architect specializing in cloud-based solutions for complex business challenges. 8+ years building scalable systems for high-traffic B2C/B2B platforms and startups. Experienced in leading cross-functional teams, managing multiple projects, and collaborating with product owners, stakeholders, and design/QA teams. Strong focus on engineering excellence, testing practices, and technical mentorship.

Recent Commercial Experience

Technical Architect / Tech Lead / Tech Director

Class35/Endava

12.2022 - Present · London, UK - remote

  • Directed technical teams, providing strategic leadership and hands-on guidance across multiple client engagements
  • Owned end-to-end delivery lifecycle: client discovery, scoping, cost estimations, contract creation, recruitment, and technical design
  • Led architecture, development, deployment, and ongoing maintenance of production systems

Defaqto - Matrix 360

  • Led frontend development of comprehensive business intelligence platform for insurance product analysis and visualization
  • Designed frontend architecture and backend GraphQL API for modular dashboard system enabling insurance providers to track market changes
  • Defined production-grade domain schema (dashboards, widgets, reports, taxonomy) ensuring strong frontend-backend API contracts
  • Built mock GraphQL API enabling frontend development and stakeholder demos without backend dependencies
  • Implemented strongly-typed schema enabling type-safe frontend development
  • De-risked integrations through early stakeholder validation and experimentation
  • Architected React/Next.js/TypeScript application with GraphQL API integration
  • Developed custom widget framework supporting 10+ visualization types (bar, column, line charts, scatter plots, KPIs)
  • Maintained comprehensive business logic and technical documentation
  • Collaborated with stakeholders on scope definition, estimation, and release planning
  • Led strategic planning sessions and feature prioritization workshops
  • Recruited and built frontend, backend, and QA teams

Coca Cola - Europe Loyalty App

  • Conducted comprehensive architectural and delivery audit
  • Identified and documented systemic issues including technical debt, architectural misalignment, and delivery bottlenecks
  • Supported team scaling through senior backend and DevOps recruitment, ensuring technical and cultural alignment

London Luton Airport - AI Baggage Analysis App

  • Architected and delivered QR-code driven baggage assessment app enabling real-time pass/fail decisions powered by AI/LLM
  • Reduced baggage handling time and errors, significantly increasing airport throughput
  • Designed server-side rendered frontend and event-driven backend with LLM orchestration, prompt versioning, and evaluation framework
  • Implemented image analysis pipeline (vision model + LLM) validating baggage against policy rules
  • Built pass/fail evaluation system with rationale generation, fallback strategies, and human-in-the-loop review for edge cases
  • Owned product roadmap, stakeholder alignment, and delivery of features with measurable business impact

PayRetailers - Developer Portal

  • Architected and delivered CMS-powered developer center
  • Built brand-consistent multi-tenant landing pages across South American markets
  • Enabled marketing team autonomy while maintaining design consistency and performance standards

Delta Capita - Document Management App

  • Architected secure multi-tenant document management system
  • Implemented organization-based report distribution with centralized access control
  • Automated manual file sharing processes

Class35 (internal) - FastLane

  • Architected and built development platform reducing project setup from weeks to hours while accelerating product delivery
  • Established consistent quality standards across development teams
  • Designed monorepo infrastructure supporting React/Next.js, Node.js APIs, serverless functions, microfrontends, and shared packages
  • Implemented enterprise-grade CI/CD pipelines, automated testing (unit & E2E), and multi-cloud deployment automation (Terraform)
  • Built comprehensive tooling ecosystem: automated linting/formatting, pre-commit hooks, and shared configuration packages
  • Established multi-browser E2E testing, visual regression testing, and preview environments for rapid feedback

Senior Full Stack Developer / Team Lead

Whiteaway

12.2020 - 11.2022 · Aarhus, DK - remote

  • Migrated legacy monolith to modern serverless architecture for Scandinavian household appliances leader (B2C & B2B)
  • Led backend cloud projects within multinational scrum teams, collaborating with product owners, stakeholders, and QA
  • Designed and implemented event-driven serverless architecture meeting complex business requirements
  • Facilitated scrum ceremonies and stakeholder demos
  • Drove cross-organization knowledge sharing on testing, monitoring, and observability best practices
  • Developed shared configurations, packages, and boilerplates to improve team productivity
  • Mentored and coached junior and mid-level engineers

Senior Full Stack Developer / Frontend Lead

SportTeam

01.2021 - 07.2022 · Warsaw, PL

  • Digitized youth sports camp operations: client administration, online signups, and payment processing
  • Built frontend solution with reusable component library, unified design system, and mobile-first responsive design
  • Delivered end-to-end features across design, frontend, backend, and DevOps
  • Implemented deployment pipelines with alerting and monitoring
  • Integrated online payment, email, and SMS services

Full Stack Developer

Bevy

07.2018 - 12.2020 · Warsaw, PL

  • Built multi-application web platform for international construction company deployed across multiple European markets
  • Led development of document management system: digitizing, sharing, tracking, and archiving legal documents
  • Contributed to EHS mobile (iOS/Android) and web applications for onsite visit tracking with ratings and feedback
  • Delivered full project lifecycle: estimation, PoC, development, testing, production deployment, and maintenance
  • Conducted developer recruitment, code reviews, and technical documentation
  • Designed and implemented GraphQL schemas and resolvers
  • Built backend services including Excel report generator and PDF OCR processing service
  • Migrated backend and serverless services from CoffeeScript to TypeScript using test-driven approach

Full Stack Developer

OVB Allfinanz

03.2020 - 09.2020 · Warsaw, PL

  • Built insurance comparison and purchase platform supporting multiple insurance types (life, health, travel) across providers
  • Developed frontend solution with dynamic form logic adapting to insurance type, coverage options, and provider variations
  • Implemented agent tracking system for monitoring customer interactions
  • Participated in business requirement sessions with insurance providers

Technologies

Backend

TypeScript
JavaScript
Node.js
Deno
Bun
REST APIs
GraphQL
tRPC
NoSQL
MongoDB
SQL
PostgreSQL
Redis
Docker
Serverless
Azure
AWS
GCP
S3
Lambda
SNS
SQS
DynamoDB
ECS
CloudWatch
API Gateway
Firehose

Frontend

TypeScript
JavaScript
React
Redux
Next.JS
SSR
CSS
Stylus
SCSS
Styled Components
HTML5
RWD
Storybook
Figma
shadcn/ui

AI

LLMs
MCPs
Image analysis
Agentic Data Flows
Web Scraping

DevOps

CI/CD
Terraform
Alerts
Monitoring
Github Actions
CircleCI
Azure DevOps
Vercel
SonarCloud

Testing

TDD
Jest
Puppeteer
Playwright

Mobile / Desktop

React Native
Expo
Electron

Other

Linux
Mac
WSL
Webpack
Babel
Eslint
Husky
Prettier
Git
Jira
Confluence
GitHub
BitBucket
Sentry
Datadog
Split
Algolia
Stripe
P24
SendGrid

Languages

Polish (native) · English (fluent)

Education

Warsaw University of Technology

Master Of Civil Engineering

2012 - 2018

University of Ecology and Management

Master Of Architecture

2016 - 2019

Interests

Technology
IoT (Home/Car Automation)
Formula 1/HyperCar
Video Games
Gym