A seasoned developer with hands-on experience in creating complex, bespoke User Interfaces and the Backends to drive them with data — alongside strong project ownership and technical leadership skills.
Selected Work
Carbon Mapper
2 years in total with Huncwot
Frontend, Backend, Ownership, Technical Leadership, Design Engineering
- lead frontend development of the flagship Carbon Mapper CO2 and Methane monitoring web application in Next.js
- lead fullstack development of the entire Carbon Mapper portal based in Next.js and Payload CMS
- collaborate on motion design with products’ designers and creative director
- turn design intent into scalable UI systems, polished interactions, and responsive layouts
- prototype and research data visualization capabilities using Mapbox for the map layer and custom D3 based solutions for remaining data charts
- author custom toolset for map data selection based on Mapbox GL Draw
- extensively test and optimize performance for handling massive amounts of point data in the browser
- unit, integration and e2e testing
- implement comprehensive custom Google Analytics tracking system
- share ownership and technical leadership for both products
- manage a team of up to 6 developers
- help pick technology stack suitable for each of the products
- directly collaborate with the Carbon Mapper Team on the final list and shape of the application’s functionalities through technical guidance and consultation
- advise on infrastructure requirements of both products
app: Next.js 14, React 18, Sass, Zustand, SWR, Axios, React Hook Form, Zod, Framer Motion, Mapbox, Turf, D3, GTM, Jest, RTL, Cypress | website: Next.js 15, React 19, Sass, Zustand, Zod, Payload CMS, MongoDB, AWS S3, Framer Motion, GSAP, Radix UI
WWF Blue Corridors
9 months with Huncwot
Frontend, Backend, Dev Ops, Ownership, Technical Leadership, Design Engineering
- lead fullstack development of both the landing page and the main web application using Next.js and Payload CMS.
- collaborate on motion design with product’s designer and creative director
- turn design intent into a scalable UI system, polished interactions, and responsive layouts
- prototype and research data visualization capabilities utilising Mapbox GL and Deck GL
- test and optimize performance for displaying a multitude of data layers - vector and raster, HTML and WebGL
- share ownership and technical leadership
- manage a team of several developers
- help pick a suitable technology stack
- directly collaborate with WWF team on the final list and shape of the application’s functionalities through technical guidance and consultation
- advise on infrastructure requirements
Next.js 15, React 19, Zustand, Zod, Payload CMS, MongoDB, AWS S3, Framer Motion, GSAP, Radix UI, MUI, Mapbox, Deck.gl
ORRAA - Coastal Risk Index
6 months with Huncwot
Frontend, Design Engineering
- frontend development of a complex User Interface aimed to visualize ORRAA’s coastal flooding prediction system
- turn design intent into a scalable UI system, smooth animations and responsive layouts
- test and optimize performance for displaying a multitude of data layers - vector and raster, HTML and WebGL
- prototype and research data visualization capabilities using Mapbox
- extensively test and optimize performance for handling a variety of data layers on the map
- help pick a suitable technology stack
Next.js 14, React 18, Zustand, SWR, Zod, NextAuth, Mapbox GL, Turf.js, Google Earth Engine, Framer Motion, GSAP
- lead frontend development of the internal-facing data management and processing half of the custom AI powered Earth Observation platform
- pick technology stack for a data-intensive crud application with bespoke interface
- implement a User Interface for searching of objects on the map of the world using either a shape drawn on the map or text prompt via chat
Next.js 14, React 18, Chakra UI, React Query, Axios, Zustand, Zod, React Hook Form, Framer Motion, GSAP, Mapbox GL, Turf.js
Various sponsored content projects
2+ years with Huncwot
Frontend, Design Engineering, Motion Design
- frontend developement of a variety of single page sponsored-content websites
- collaborate on motion design with projects’ designers and creative director
- turn design intent into scalable UI systems, smooth animations and responsive layouts
- co-author a tech stack migration from Gulp and jQuery to a custom Vite and Typescript solution for massive improvements in Developer Experience and code robustness
- implement custom libvips (sharp) based image optimization pipeline built into the stack
- test and improve page performance, reduce payloads and optimize animation code to achieve smooth visuals across all devices
- work on improvement of key metrics using Lighthouse
Custom stack with Typescript, Vite, Rollup, Twig, Sass, GSAP, D3, Lottie, Sharp,
Photography Portfolio of Jaro Mikos
1 month, freelance; design by Jaro Mikos
Frontend, Backend, Dev Ops, Design Engineering, Product Management, Consulting
- end to end work on migrating an existing website from SquareSpace a custom Next.js + Contentful CMS solution
- data structure design
- bespoke motion design and implementation
- transfer design language into responsive layouts and polished interactions
- optimize key metrics using Lighthouse
- implement a simple, but effective SMTP contact channel for client inquiries
- take care of website hosting
Next.js 13, React 18, Stitches CSS, React Hook Form, Zod, Framer Motion, GSAP, GraphQL, Apollo, Nodemailer
Awards
Anthem Awards 2025 for WWF Blue Corridors ↗
- Gold - Best Use of Data
- Silver — Digital & Innovative Experiences
- Silver — Special Projects
Technology I’m comfortable around
Programming
- Javascript, Typescript
- React, Next.js (RSC, hooks)
- Node.js
- Payload CMS, Contentful CMS
- MongoDB, PostgreSQL
- SCSS, CSS-in-JS/TS
- Radix UI, Base UI, Chakra UI
- React Hook Form, Zod
- Tanstack Query, SWR, Apollo
- GSAP, Motion
- D3, Mapbox GL, Maplibre, Turf, Deck GL
- Jest/Vitest, Cypress, Playwright, K6
- Vite, Webpack, ESlint, Prettier etc.
Design and Media
- Figma
- Adobe Illustrator
- Adobe Photoshop
- Adobe Lightroom
- Sharp, ImageMagick, FFmpeg