
Wojciech Rościszewski
@wojciechrociszewski
Frontend developer at Cazai who built a B2B SaaS from scratch and contributed to its Go backend.
What I'm looking for
At Cazai, I built a B2B SaaS web app for AI-generated sales proposals from scratch. I delivered features including a dashboard, proposals pipeline, workflow builder, and rich-text editor.
I also contributed to the Go backend, including OTP login endpoints, Redis rate limiting, PostgreSQL data model changes, and asynchronous image thumbnails. I added multilingual support and a type-safe API client, and wrote tests backed by GitHub Actions CI.
Before Cazai, I worked in international transport logistics at Saint-Gobain Sekurit, Valmet Automotive, and Selena FM. For my master's thesis, I built a reinforcement learning system in Python to optimize trailer loading, benchmarking it against two logistics experts.
Experience
Work history, roles, and key accomplishments
Junior Frontend Developer
Cazai
Jul 2026 - Present (3 months)
Built the Cazai web app from scratch, a B2B SaaS for AI-generated sales proposals, using React 19, TypeScript, TanStack, HeroUI, Tailwind CSS and Feature-Sliced Design. Delivered core features including dashboard, proposals pipeline, data table with saved views, visual workflow builder, and rich-text proposal editor.
Transport Logistics Specialist
Saint-Gobain Sekurit
May 2024 - Jun 2026 (2 years 1 month)
Managed end-to-end outbound transport of automotive glass, from SAP deliveries and shipments to on-time arrival at customers in Europe and overseas. Coordinated freight forwarders, organized road, sea and air shipments, and handled escalations and transport claims.
Transport Logistics Specialist
Valmet Automotive
Jun 2023 - Oct 2023 (4 months)
Handled day-to-day outbound transport operations at an automotive manufacturing site, working in SAP ERP. Created deliveries and shipments, coordinated with freight forwarders, and prepared transport documentation.
Transport Assistant
Selena FM
Nov 2020 - Oct 2022 (1 year 11 months)
Organized international multimodal transport (sea, rail and road) of construction chemicals, much of it dangerous goods (IMO), in Microsoft Dynamics AX. Managed dangerous goods shipments, coordinated carriers, and processed orders and shipments.
Education
Degrees, certifications, and relevant coursework
University WSB Merito
Master, Artificial Intelligence and Machine Learning
2023 - 2025
Master's degree in Artificial Intelligence and Machine Learning. Thesis on optimizing transport vehicle loading using a reinforcement learning model, achieving ~6x faster planning and better space utilization compared to experts.
University WSB Merito
BEng, Logistics Process Engineering Management
2019 - 2023
Bachelor of Engineering in Logistics Process Engineering Management. Thesis on systematization of the transportation claims process in a manufacturing company.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
Job categories
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