Hello, I'm Jacob, a front-end developer & data analyst. My unique background in analytics and development allows me to build robust, user-friendly applications while also leveraging data to drive strategic improvements. I specialise in the React and Next.js ecosystem and am passionate about creating clean, maintainable code that directly contributes to a company's success.
About me
After graduating with a degree in Management & Analytics, I decided to pursue my passion for programming and data analysis. I enrolled for a variety of courses and learned front-end web development, data manipulation & analysis . My favourite part of programming is the problem-solving aspect, as well as the never-ending 'chase' to learn new things. I love the feeling of finally figuring out a solution to a problem. My core stack is React.js. I am also familiar with TypeScript. I am always looking to learn new technologies.
When I'm not coding, I enjoy going go-karting, watching F1, and doing anything motorsports related.
My Projects
A modern contact management tool enabling professionals to organize, filter, and track relationships. Features tagging, grouping, and an integrated activity log for a seamless, scalable workflow.
- React
- shadcn
- tailwind
- typescript
- zod
- recharts
- hook form
- sonner
- framer-motion
- date-fns
- AUTH
- supabase
An internal management system for staff to oversee bookings, cabins, and users. Includes dashboards, check-ins, payment verification, and activity tracking, ensuring smooth operations and guest satisfaction.
- Next.js
- Auth.js
- Server Actions
- SSG
- Moder Hooks
- Supabase
A guest-facing booking platform showcasing cabins, prices, and real-time availability. Customers can easily browse options, book stays, leave personalized notes, and manage their reservations, all through a smooth, intuitive, and fully mobile-friendly experience.
- React
- React Query
- Redux
- Styled Components
- Supabase
and more...
My skills
- HTML
- CSS
- SASS
- Tailwind
- Styled Components
- Material-ui
- JavaScript
- TypeScript
- React.js
- React Query
- React Router
- Redux
- Redux Toolkit
- Next.js
- Node.js
- Supabase
- Framer Motion
- Git
- SQL
- PowerBI
- Prisma
- Zustand
My experience
Lecturer in Statistics and Data Analysis
Doha, Qatar
Delivered lectures on complex statistical topics, preparing students for exams. Utilized tools like Python, R, and Excel in teaching, developing students' analytical and problem-solving skills.
July 2024 - July 2025Freelance & Front-End Developer
Leicester, UK
As a freelance and in-house developer, I created and maintained web applications for a B2B startup. I successfully delivered high-quality projects using technologies like React, Next.js, Redux, and Tailwind, directly improving the user experience and service offering.
June 2023 - July 2025Data Analyst
Ashby-de-la-Zouch, UK
Promoted to Data Analyst, where I developed and implemented data-driven reports in Power BI and Excel. These reports provided actionable insights that significantly improved company KPIs, including delivery time and fleet utilization.
June 2022 - May 2024Transport Coordinator & Fleet Management
Manchester, UK
Managed and optimized a fleet of 150 drivers, serving as the main point of contact for clients. I leveraged data analysis to make strategic decisions that significantly improved efficiency, customer satisfaction, and fleet utilization.
Sept 2020 - May 2022Education
Manchester, UK
I hold a Bachelor's degree in International Business Management and a Master's in Data Analysis from Manchester Metropolitan University. I have also completed numerous bootcamps to specialize in technologies such as React, Next.js, Redux, and TypeScript.
2015 - 2018 (BA) & 2019 (MA)Contact me
Please contact me directly at Slojkowski33@gmail.com or through this form.