Jacek Roszkowiak
Full Stack Developer
Berlin
Summary
Versatile Software Developer with a background in IT Project Management, driven by curiosity, adaptability, and a collaborative mindset. Passionate about leveraging technology to solve complex problems, bringing a diverse skill set and a wide-ranging perspective to software development.
Overview
15
15
years of professional experience
7
7
years of post-secondary education
2
2
Certifications
Work History
Web Developer and DevOps Engineer
Mowea GmbH
Berlin, Germany
01.2023 - 12.2023
- Created a dashboard prototype for turbine data presentation and statistics in React.js.
- Maintained and developed MOWEA’s website using Vanilla JS.
- Developed a Product Digital Nameplate using Vanilla JS.
- Ensured backup and recovery procedures were in place and ran smoothly to minimize data loss in case of any unexpected event.
- Installed and configured software and updates, including security patches and new versions to keep the system up to date with the latest features and security improvements.
- Performed software and hardware tests.
- Conducted regular system maintenance activities like disk cleanup and monitored system performance to ensure smooth operations.
- Managed user accounts, granted permissions, and assigned access rights to ensure that the right people had access to the right resources.
- Provided technical support to end-users, resolved issues, and answered queries related to the Windows Server environment.
Junior Software Developer
IOTA Foundation
Berlin, Germany
11.2021 - 08.2022
- Delivered operational microservice solutions for the CityXchange project, enabling 6 leading cities to integrate smart positive energy solutions utilizing IOTA DLT
- Stack: TypeScript/ JavaScript, Node/Express.js, Nest.js, CSS, HTML5
- Supported in designing and developing IOTA software components
- Assisted in integrating front- and backend of the developed solutions
- Implemented software development best practices and collaborated with other software projects in the open-source DLT space
- Established rigorous unit and end-to-end tests to guarantee software reliability
- Documented the developed solution using Swagger and Draw.io.
Project Manager / Small Business Owner / Startup Collaborator
Self-employed
Berlin, Germany
11.2015 - 10.2021
- Collaborated in the establishment of Berlin's pioneering independent food delivery service, later rebranded as khora.berlin, contributing to its conceptualization, development, and operationalization
- Founded and operated a small business offering logistic services within the Berlin area, overseeing all aspects of business operations, including client acquisition, service delivery, and financial management
- Orchestrated end-to-end project execution for diverse clientele within logistics and entertainment sectors, overseeing project initiation, planning, execution, monitoring, and closure phases
- Effectively managed remote teams across various projects, ensuring cohesive collaboration, task delegation, and timely deliverables, while promoting a positive team dynamic
- Maintained proactive communication with clients, reporting project progress, service status, and results, ensuring alignment with client expectations and fostering long-term partnerships.
IT Project Manager
IBM
Wrocław, Poland
02.2013 - 04.2015
- Delivered Network and Telecommunication infrastructure projects in six remote locations in Europe and UK
- Led UK-wide infrastructure clean-up project which resulted in 1 million £ annual saving
- Remotely managed infrastructure rollouts for UK site closures, encompassing server rooms and facilities supporting up to hundreds of job seats, and successfully coordinated the relocation to new locations, ensuring minimal disruption and seamless transition
- Managed remote teams and conducted regular meetings with project stakeholders
- Created Project Documentation, including the Project Plan, Communication Plan, Risk and Issues Management
- Assessed Project Risks, and Created Risks Mitigation Plan.
Project Managment Officer (PMO)
IBM
Wrocław, Poland
03.2012 - 09.2013
- Worked alongside the Project Manager in Pilot Project delivery
- Assisted in project planning and creating project documentation
- Tracked and controlled project development against the Project Plan
- Facilitated resource allocation by continuously tracking assets
- Planned project meetings and managed communication following the Communication Plan
- Managed project documentation.
Full Stack Developer
KulturExplora
Berlin , Berlin
01.2025 - Current
- Owning the entire backend development, designing and optimizing the architecture using Node.js, TypeScript, TypeORM, PostgreSQL, and Supabase to maximize scalability, efficiency, and maintainability.
- Developing and refining the frontend in React.js, implementing new features, optimizing performance, and refactoring existing code to enhance user experience and maintainability.
- Designing and structuring robust data models in PostgreSQL, ensuring efficient database performance and seamless application functionality.
- Assessing, selecting, and integrating ORM tools to optimize database interactions and streamline data workflows.
- Establishing a scalable, modular project architecture with Node.js and TypeScript.
IT Projects Coordinator
IBM
Wrocław, Poland
05.2011 - 01.2013
- Coordinated project team communication by planning and hosting project status calls, ensuring meeting minutes, etc
- Tracked and controlled projects by providing status reports and optimizing tasks
- Reviewed project documentation and ensured process compliance
- Responsible for all other team administrative duties.
IT Consultant
OGICOM
Wrocław, Poland
02.2010 - 03.2011
- Focused on Small and Medium Business clients, drove new customer acquisition, and maintained strong relationships with existing clients
- Analyzed business needs to understand client requirements and tailored customized IT solutions for ecommerce and web presence
- Leveraged product knowledge and expertise to recommend optimal solutions, ensuring alignment with client goals
- Delivered exceptional customer support, ensuring high levels of satisfaction and long-term client retention.
Education
MERN Stack Bootcamp, JavaScript ES6/ TypeScript / React / CSS /Sass / HTML5 / MongoDB - Collaborative 4 months MERN stack programming course
ReDI School of Digital Integration
Berlin 10.2023 - 02.2024
Full Stack Web Development Bootcamp, JavaScript ES6 / CSS / HTML5 / PostgreSQL / React.js / Vue.js / Handlebars.js / Node.js / Express.js - Fast-paced 12-week programming course with emphasis on learning by doing
SPICED Academy
Berlin 11.2020 - 01.2021
Masters Degree - Sociology - Market Research and Communication
University of Wrocław
Wrocław, Poland 10.2003 - 01.2009
Certification - Cloud Computing AWS Services
AWS Cloud Computing
Hamburg 10.2024 - 12.2025
Skills
Software Best Practices
Certification
Agile WoW Workshop, ReDI School of Digital Integration, 12/01/23
Languages
Polish
Bilingual or Proficient (C2)
English
Bilingual or Proficient (C2)
German
Intermediate (B1)
Interests
Bike packing
Sailing
Hiking
Cooking
Reading Science Fiction and contemplating problems of modern societies
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Full Stack Developer
KulturExplora
01.2025 - Current
Certification - Cloud Computing AWS Services
AWS Cloud Computing
10.2024 - 12.2025
MERN Stack Bootcamp, JavaScript ES6/ TypeScript / React / CSS /Sass / HTML5 / MongoDB - Collaborative 4 months MERN stack programming course
ReDI School of Digital Integration
10.2023 - 02.2024
Web Developer and DevOps Engineer
Mowea GmbH
01.2023 - 12.2023
Junior Software Developer
IOTA Foundation
11.2021 - 08.2022
Full Stack Web Development Bootcamp, JavaScript ES6 / CSS / HTML5 / PostgreSQL / React.js / Vue.js / Handlebars.js / Node.js / Express.js - Fast-paced 12-week programming course with emphasis on learning by doing
SPICED Academy
11.2020 - 01.2021
Project Manager / Small Business Owner / Startup Collaborator
Self-employed
11.2015 - 10.2021
IT Project Manager
IBM
02.2013 - 04.2015
Project Managment Officer (PMO)
IBM
03.2012 - 09.2013
IT Projects Coordinator
IBM
05.2011 - 01.2013
IT Consultant
OGICOM
02.2010 - 03.2011
Masters Degree - Sociology - Market Research and Communication
University of Wrocław
10.2003 - 01.2009
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