Mateusz B.-Software Engineer
Check rate
Experience
Senior Software Engineer
Software Mind
- Security Outreach (Frontend Guild): Promoting "security-first" culture and sharing frontend knowledge by conducting Threat Modelling workshops and expert sessions on SBOM and Software Supply Chain Security (npm).
- Engineering & Privacy: Architecting secure React/Next.js systems for US/DACH markets; implementing Privacy by Design (GDPR) in frontend data flows and caching strategies.
- Technical Stack: Leveraging Vite-based monorepos, Storyblok (headless CMS), and React Query for high-performance, scalable web applications.
Frontend Developer
Shiji Poland
- Quality & Code Review: Conducted rigorous Code Reviews within the React ecosystem to identify logical flaws and vulnerabilities; mastered debugging to achieve a 50% reduction in production defects.
- Standards Alignment: Successfully elevated team engineering standards, aligning software quality with organizational benchmarks.
Frontend Developer
Tuatara
- Enterprise Systems: Developed telecom platforms (React/Redux/TS) and customized IBM Business Automation Workflow (BAW), focusing on system usability and data integrity.
Information Security Specialist
Owned Outcomes
- Pentesting & Compliance: Executed penetration tests for a medical Big Data platform using OSSTMM
Full Stack Developer
Amberbit
- Full-Stack Engineering: Developed scalable Elixir (Phoenix) and React/Redux applications, ensuring end-to-end data integrity across the entire stack.
Industry experience
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Experienced in Information Technology, Telecommunication, and Healthcare.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Quality Assurance.
Summary
Software Engineer (9+ years) specialized in secure development. Experienced in bridging technical engineering with regulatory frameworks (EU AI Act, NIS2, GDPR) — translating compliance requirements into concrete architecture decisions, Secure SDLC practices, and Privacy by Design implementation.
Skills
Software Engineering: Typescript, Javascript (Es6+), Elixir, Html5, Css3/Scss
Frameworks & Libraries: React.Js, Next.Js, Redux, Phoenix, Tailwind Css, React Query
Testing & Tools: Vitest, React Testing Library (Rtl), Storybook, Git, Vite, Monorepo Architecture
Cryptography: Deep Technical Background In Cryptographic Algorithms (Master'S Thesis: Fpga Vs. Cpu Performance Analysis)
Privacy & Compliance: Exposure To Healthcare Data Security Requirements (Us-Based Medical Database Project); Gdpr Technical Implementation
Methodologies: Privacy By Design (Pbd) & Privacy By Default, Data Minimization Strategies
Cybersecurity: Penetration Testing (Web & Network), Osstmm Standard, Vulnerability Management
Application Security: Owasp Top 10 Mitigation, Threat Modeling, Secure Code Review
Infrastructure: Secure Sdlc (Software Development Life Cycle), Ci/Cd Security Pipeline Integration
Languages
Education
Białystok University of Technology
Master of Engineering · Computer Science · Białystok, Poland
Białystok University of Technology
Bachelor of Engineering · Computer Science · Białystok, Poland
Certifications & licenses
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Mateusz is based in Bialystok, Poland.
Mateusz speaks the following languages: Polish (Native), German (Advanced), English (Advanced), Danish (Intermediate), French (Intermediate).
Mateusz has at least 9 years of experience. During this time, Mateusz has worked in at least 4 different roles and for 5 different companies. The average length of individual experience is 2 years and 9 months. Note that Mateusz may not have shared all experience and actually has more experience.
Based on recent experience, Mateusz would be well-suited for roles such as: Senior Software Engineer, Frontend Developer, Information Security Specialist.
Mateusz's most recent position is Senior Software Engineer at Software Mind.
In recent years, Mateusz has worked for Software Mind and Shiji Poland.
Mateusz is most experienced in industries like Information Technology, Telecommunication, and Healthcare.
Mateusz is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.
Mateusz has recently worked in industries like Information Technology.
Mateusz has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Mateusz holds a Master in Computer Science from Białystok University of Technology and a Bachelor in Computer Science from Białystok University of Technology.
Mateusz has 4 certificates. Among them, these include: AIGP, CIPP/E, and CSSLP.
Mateusz will be available part-time from November 2026.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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