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Wojciech RościszewskiWR
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Wojciech Rościszewski

@wojciechrociszewski

Frontend developer at Cazai who built a B2B SaaS from scratch and contributed to its Go backend.

Poland
Message

What I'm looking for

I'm aiming for full-stack work.

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

CA
Current

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.

SS

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.

VA

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.

SF

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

UM

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.

UM

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.

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