About Me
I am a hands-on Tech Lead and Architect who stays close to the code. I design systems and deliver production software across web and platform teams, with a focus on clarity, maintainability, and outcomes.
Core focus: Java/Spring, Node.js/Next.js, AWS, and Terraform, with a strong bias toward microservices, API-first design, and pragmatic delivery.
As per the FRIS methodology, my thinking style is Visionary and my behavioral style is Individualist.
Projects
Focused on architecture scalability and streamlined infrastructure management.
Key contributions:
- Implemented Kafka and Kafka Streams for event-driven architecture
- Improved monitoring and observability
- Managed AWS infrastructure with Terraform and Helm
- Migrated MySQL to PostgreSQL for performance gains
- Refactored legacy code for stability and performance
- Built a back-office solution in Next.js
- Migrated Amazon DynamoDB to a more efficient solution
- Supported high-volume event processing (Big Data, ~1 million events/second)
Role: Tech Lead, DevOps, Fullstack Developer, Architect
Technologies & Tools:
- Kanban
- Jira / Confluence / BitBucket
- Java 17+, TypeScript
- AWS, Terraform, Helm
- React.js, Next.js
- Kafka, Kafka Streams
- Spring Boot, Spring Cloud
- Kubernetes
- Amazon ElastiCache (RedisDB), Amazon Aurora (PostgreSQL, MySQL), Amazon DynamoDB
- Keycloak
- Argo CD, Jenkins
- Grafana, Loki, Prometheus
Personal resume site built for clarity, maintainability, and fast iteration.
Technologies & Tools:
- HTML, SCSS
- GitHub
- Jekyll
- Markdown
- Swetrix
My first open-source project, supported by user donations.
Built a Homebridge plugin that pulls data from a Nibe heat pump via Nibe Uplink, enabling Apple HomeKit integration for devices without native support.
Technologies & Tools:
- TypeScript
- GitHub
- Gulp
- Jest
- Homebridge
- Node.js, npm
Established online touchpoints and a roadmap for Osadkowski’s digital transformation.
Key contributions:
- Mapped customer needs, business goals, and constraints
- Led workshops to align stakeholders on technology direction
- Defined Architectural Drivers and System Discovery Canvases
- Supported the Customer Journey Map and roadmap planning
eCare deep dive:
- Defined non-functional requirements and logical architecture
- Helped scope functional requirements
- Delivered a Service Blueprint
Agile delivery and eCommerce definition:
- Set up the technical foundation before sprints as Team Leader
- Supported the Scrum team and eCommerce definition in parallel
- Co-led Story Storming workshops with the Business Architect
Role: Solution Architect.
Technologies & Tools:
- SCRUM
- Jira / Confluence
- Mural
- Java 17
- Microsoft Dynamics 365 and Comarch ERP XL integration
- Next.js
- Nest.js
- Spring Cloud
- RedisDB, PostgreSQL, MongoDB, Azure Blob Storage
- Keycloak
- Strapi
- Azure Functions, AKS (Azure Kubernetes Service)
- Azure Cognitive Search
- Pulumi
- Argo CD
- Azure DevOps
- Azure Application Insights
- Azure Service Bus
Led an IT architecture audit for X-Kom across AS-IS and TO-BE phases.
AS-IS:
- Reviewed 100+ documents and ran a 70+ question anonymous survey
- Facilitated 20+ workshops over 30 days with business, configuration, and infrastructure teams
- Modeled current architecture with the C4 Model
- Produced system ratings (elasticity, scalability, reliability) and a heatmap
- Created a System Model Canvas per system
TO-BE:
- Ran workshops with business, IT, and security stakeholders
- Delivered a Technical Debt Report
- Defined a future architecture vision using the C4 Model
- Proposed recommendations and an implementation roadmap
Role: IT Expert, collaborating with a Business Architect and a Senior Architect.
Technologies & Tools:
- TypeScript
- ClickUP
- Confluence
- C4 Model, Structurizr
- Node.js
- HTML, JavaScript, CSS
- GitLab, GitLab pipelines
- Qualtrics
- Miro
IT Expert for UPC
UPC
January 2021 - April 2021
Supported UPC as an Enterprise Architect across strategic initiatives:
- Gamfi setup: configured a gamification platform for employees
- Anthos migration: applied lessons from the self-care platform to other migrations
- Open TM Forum API: helped design APIs for core systems
- Self-care changes analysis: aligned integrations with Liberty Global infrastructure
- IT Architecture Board: contributed to architectural decisions
- Centralna Baza Pracownikow: conducted initial analysis
Built a PWA self-care platform for UPC clients, kickstarting the DNA (Digital and Agile) transformation program.
Scope and delivery highlights:
- Worked with UX and analysts to define the MVP and Customer Journey Map
- Delivered the MVP in 10 weeks (10 one-week sprints) to production
- Core features: login, onboarding, payments, notifications, and profile management
- Added a chatbot with custom UI and knowledge base in 4 additional weeks
- Success scaled the initiative from one team to three
Role: IT Architect, Developer, Team Leader.
Technologies & Tools:
- Google Anthos, Kubernetes, Docker
- Kemp Load Balancer
- Spring Cloud
- React.js
- Microservices / Netflix OSS
- Spring Boot Admin
- Swagger
- RedisDB, Oracle DB
- RabbitMQ
- Java 11
- Firebase
- SCRUM
- Jira / Confluence
- GitLab, GitLab pipelines
Delivered a self-care mobile application for heat and energy clients, backed by microservices on AWS.
Also contributed to Honorowy Dawca Energii Fortum, a charity app integrated with sports platforms for activity tracking and donations.
Role: IT Architect and Developer, with a backend focus.
Technologies & Tools:
- Amazon ECS (Elastic Container Service)
- Spring Boot
- React Native
- Microservices / Netflix OSS
- Spring Boot Admin
- Swagger
- RabbitMQ
- Integration with external services: Strava, Runkeeper, Garmin, Firebase, OpenWeatherMaps, Airly
- SCRUM
- Jira / Confluence
- GitLab, GitLab pipelines
Bestellcenter
Deutsche Telekom
September 2016 - November 2016
Built a B2B eCommerce portal for German business clients, designed as a telco store.
Owned solution design as Solution Architect and contributed to delivery as Java Developer.
Technologies & Tools:
- Oracle ATG
- Oracle Endeca
- Spring Boot
- Activity
- Jira / Confluence
Partnershop
Deutsche Telekom
September 2015 - September 2016
Delivered a B2B eCommerce portal for large German enterprises in collaboration with Deutsche Telekom teams across Europe.
Started as Solution Architect (analysis and design) and moved into Team Lead during delivery with responsibility for:
- Development teams and delivery coordination
- Performance optimization
- Release management
Technologies & Tools:
- Oracle ATG
- Oracle Endeca
- SAP
- Jira / Confluence
Delivered an eCommerce platform for a telco offering, including personalized propositions, eCare features, and a customer portal. The work included complex imports, integrations, and a large product catalog with intricate relationships and business rules.
Role and responsibilities:
- Java/ATG Developer with HLD/LLD contributions
- Pricing, automation, and production support
- Bug fixing, performance optimization, and client communication
Technologies & Tools:
- Oracle ATG
- Java
- DynaXML CMS
- HTML, CSS, JavaScript, jQuery, Prototype.js
- Ant
- Hudson
- Memcached, Couchbase
- JBoss
- SVN, svnmerge.py
- JRebel
- Web Services
- Oracle DB
finamodirect.pl - backoffice web application
Finamo
June 2009 - February 2010
Built a back-office web application integrated with the Finamo insurance store to support order verification and processing.
Owned the full solution: UI, storage, integrations, and business logic.
Technologies & Tools:
- Java
- Spring
- Hibernate, MySQL
- HTML, CSS, JavaScript, jQuery
- Web Service integration
Tender Participation
INWI Morocco - Tender participation, demo store creation, and client presentation for a telco store based on Oracle ATG.
Poczta Polska Uslugi Cyfrowe - Tender participation and preparation of an Oracle ATG-based store offer.
InterCars - Tender participation for a modern retail store based on Oracle ATG.
UPC Selfcare - Tender participation for a microservices-based self-care portal.
Rekom - Tender participation for mobile apps for restaurants and bars, including payments, reservations, recommendations, and staff workflows.
Nationale Nederlanden Mobile App - Tender participation for an insurance mobile store.
UPC Mobile App - Tender participation for a telco self-care mobile app (similar to Orange Flex).
RAA (Ralph Appelbaum Associates) - Museum app - Tender participation for an online storytelling portal to enrich museum exhibitions.
UPC Agent Desktop - Tender participation for a call-center web app to replace legacy tooling, standardize UI, speed up onboarding, and simplify daily work.
Osadkowski - Tender participation for digital transformation with eCommerce and eCare platforms.
X-Kom - Tender participation for an architecture audit.
Plus Pay - Tender participation for a small bank mobile app product definition phase.
Work Experience
Hands-on Tech Lead in a large-scale Big Data and logistics environment, staying close to the code while guiding architecture and delivery.
Key focus areas include:
- API-first platform design for multi-tenant logistics products
- Scalable data processing for road transportation
- AWS implementation of technical requirements for ISO certification
- Practical leadership across cross-functional teams
Our systems handle data for 200,000+ trucks and integrate with 400+ providers, which drives the scale and complexity of daily work.
Hycom
IT Architect - Senior IT Architect - Microservices and Cloud
September 2015 - September 2022
hycom.digital
Returned from consulting into hands-on team delivery, shifting focus to microservices and cloud. Most of my time was spent on client projects (Deutsche Telekom, Fortum, UPC, X-Kom, Osadkowski), with the remainder devoted to knowledge sharing and internal growth.
Company-wide contributions:
- Led the Cloud Circle and created internal training on microservices and cloud
- Advocated for AWS/GCP certifications and secured budgets for learning
- Initiated architect meetups and shared cross-project patterns
- Co-created Hycom’s Unified Delivery Methodology for consistent delivery standards
External and community work:
- Collaboration with the Technical University of Lodz on student projects
- Co-led a microservices course: “Hy!Class: Tworzenie mikroserwisow z wykorzystaniem Spring Cloud”
- Talks and workshops on TDD, agile delivery, and the IT architect role
Mentored multiple team members, supporting career growth and practical delivery skills.
Deutsche Telekom
IT Expert - outsourcing from AMG.net - ATG and integration guidelines
August 2013 - August 2015
www.telekom.com
Transitioned from developer to consultant/expert, working on-site in Bonn and later across Germany and Poland.
Primary responsibilities:
- Created design guidelines for T-Mobile online stores across Europe (Oracle ATG)
- Led integration research and documented systems and dependencies
- Compared platforms and approaches (ATG vs. Hybris, Portlets vs. Servlets)
- Acted as an ATG and integration expert across multiple teams
Key initiatives:
- eCompany: ATG and Siebel integration proof of concept
- eGarage: digital transformation program
- T-Mobile PL (t-mobile.pl): local online store delivery
- T-Mobile NatCos: international rollouts for national companies
AMG.net, Bull, Atos
Trainee - IT Architect - eCommerce delivery
April 2008 - August 2013
Started as a trainee at AMG.net and progressed to Technical Team Leader for recurring delivery work, then moved into major release projects in the eCommerce domain.
Key responsibilities:
- Led a 2 to 5 person team delivering short-cycle functional expansions
- Built a delivery playbook that became a role model: profitable, well-documented, and clearly communicated
- Owned end-to-end delivery: design, implementation, testing, and release preparation
- Drove refactoring, performance optimization, and architecture changes in large-scale releases
- Supported internal initiatives, trainings, and tooling (Confluence/Crucible plugins)
Finamo
Full Stack Developer - End-to-end delivery
June 2009 - February 2010
Delivered a web application end to end while working remotely and collaborating directly with the client.
Owned the full delivery lifecycle: design, development, and deployment.
Zakład Fotografii Cyfrowej Andrzej Sierakowski w Gostyninie
IT Specialist - Digital imaging
July 2007 - October 2007
Responsibilities included:
- Processing and retouching digital images
- Maintaining and administering computer systems
- Preparing and printing photographs
Tools and technologies:
- Photoshop
Computer Service Support
Helpdesk Consultant - Telecom support
July 2006 - December 2006
HelpDesk Consultant for a major Polish telecommunications client, Telekomunikacja Polska (TP S.A.).
Handled high-volume support requests with clear communication and fast resolution.
Certifications
- AWS Certified Cloud Practitioner Issued Oct 2020 · Expired Oct 2023
- Train the Trainer - Sages Issued Oct 2018 · No Expiration
- Oracle Certified Associate, Java SE 7 Programmer (1Z0-803) Issued Nov 2013 · No Expiration
- Oracle ATG Web Commerce 10 Implementation Developer Essentials (1Z0-510) Issued Jul 2012 · No Expiration
- ITA101 - Databases (Microsoft IT Academy Programme) Issued Jan 2012 · No Expiration
- Oracle ATG Web Commerce 10 PreSales Specialist Assessment Issued Jan 2012 · No Expiration
- Oracle ATG Web Commerce 10 Sales Specialist Assessment Issued Jan 2012 · No Expiration
Badges
Education
- 2005 - 2013: Lodz University of Technology
- Engineer’s Degree in Software Engineering and Data Analysis
- Activities: Member and first president of the “Koffeine” scientific club
Languages
- English: Professional working proficiency
- Polish: Native proficiency
A Little More About Me
In addition to software engineering, I enjoy:
- Training my husky dog
- Trekking and hiking
- DIY projects