YASINDU NETHMINA
Full-Stack
Product
Engineer
Product teams hire me when they need a full-stack engineer who can take ownership and ship fast.
A FEW WORDS ABOUT ME
Full-Stack Engineer with 5+ years building high-performance products across SaaS, finance, data-heavy systems, AI-enabled workflows, and modern web platforms.
With over 5 years of hands-on experience, I architect and deliver robust full-stack solutions across both frontend and backend for high-growth startups and product teams. Most recently at v21 Studio, a top-tier UK-based design agency, I led end-to-end engineering across 25+ client projects. Before that, at ProtoKOLs, I led architecture for an AI-powered analytics platform that transformed complex datasets across 100K+ influencers into actionable insights for brands and agencies.
WHAT I WORK ACROSS
Best suited to end-to-end product work where architecture, implementation, and user experience need to stay aligned.
Full Stack EngineeringFrontend ArchitectureBackend SystemsDatabase ArchitectureReal-Time SystemsAnalytics PlatformsPerformance EngineeringAI-Enabled WorkflowsCloud & DeploymentAPI DevelopmentWeb3 IntegrationsDeveloper Tooling
CORE STACK
The tools I reach for most often when building and shipping modern web products.
TypeScriptReactNext.jsTailwind CSSFramer MotionTanStack QueryZustandShadcn UINode.jsNestJSHonoExpress.jsGraphQLtRPCPrismaDrizzlePostgreSQLRedisDockerAWSRailwaySupabaseVercelGitHub ActionsModule FederationThree.jsSolidityWagmiViemSentryAI Agents
SELECTED WORK
Case studies shaped by ownership and outcomes.
A selection of platforms, product surfaces, and client builds where I owned meaningful parts of the engineering work across frontend, backend, data, and delivery.
2024 - 2025
ProtoKOLs
AI-powered analytics product for influencer research, project tracking, and narrative monitoring across social and on-chain data.
100K+ influencer workflows~40% lower API costsDashboards plus backend pipelines
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, PostgreSQL, Redis, NestJS, Prisma, TanStack Query, Supabase, tRPC, Zustand, Docker
2025
HubsAI
Motion-heavy landing experience for a tokenized retail concept, combining 3D scenes, product storytelling, rewards, kiosk flows, and airdrop surfaces.
Spline-powered sections3D kiosk and rewards storytellingVideo, gallery, and airdrop flows
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, Framer Motion, Spline
2026
Hera Finance
Solana trading product spanning swap execution, send flows, route visualization, wallet portfolio tracking, and chart-driven dashboard surfaces.
Swap, send, portfolio, dashboardRoute tree and Sankey visualizationsJupiter and Helius integrations
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, TanStack Query, Solana Web3.js, Solana Wallet Adapter, Privy, Jupiter API, Helius, Recharts, React Flow, Zustand
2026
Indigo Protocol
Synthetic-asset protocol app and website covering dashboards, stability pools, loan flows, redemptions, governance, staking, and product education.
Stability pools, loans, redemptions, governanceReusable charts, modals, and token flowsProtocol app plus landing website
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Tech Stack: Next.js, TypeScript, Tailwind CSS, Recharts, Framer Motion, GSAP, Zustand
2026
Tria
Multilingual product platform for a cross-chain wallet and card experience, combining 3D/WebGL scenes, Spline modules, and scroll-driven storytelling.
3D phone scene and Spline product flowsScroll-driven hero, grid, and card storytelling8-language platform with overview and blogs
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, GSAP, Framer Motion, Three.js, React Three Fiber, Spline, next-intl, Zustand
2026
Ern
Stablecoin yield product and dashboard built around daily Bitcoin-denominated returns, live analytics, wallet-connected deposits and withdrawals, and on-chain position tracking.
Yield simulator and market comparisonWallet-connected deposit, withdraw, and claim flowsLive BTC price, APY, and on-chain history
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Tech Stack: Next.js, TypeScript, Tailwind CSS, Recharts, TanStack Query, Wagmi, RainbowKit, Viem, Alchemy API, Aave GraphQL, Zustand, GSAP
2026
Dash Markets
Realtime trading-game platform covering onboarding, room creation, live chart gameplay, betting flows, rankings, chat, and operator-facing admin tools.
Create room, wait, bet, and results flowsLive chart, rankings, and room chatOnboarding plus admin tooling
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Tech Stack: Next.js, TypeScript, Tailwind CSS, Victory, Zustand, Radix UI
2024
Block Central
DeFi dashboard for portfolio tracking, staking, trading, farming, and cross-chain token flows.
Analytics plus DeFi modulesWagmi and Viem migrationTrading, staking, farming flows
View Case Study
Tech Stack: Next.js, TypeScript, Solidity, Tailwind CSS, PostgreSQL, GraphQL, Docker, TanStack Query, ethers.js, Wagmi, Viem, Tenderly, Squid Router
2024
xSurge
Token swap, liquidity, rewards, and gamified DeFi product centered around the xUSD ecosystem.
Swap, pool, farm, liquidityWallet and contract flowsStablecoin product surfaces
View Case Study
Tech Stack: Next.js, TypeScript, Solidity, Tailwind CSS, Hardhat, Wagmi, Viem, tRPC, Chainlink Oracles, Tenderly
2024
Liquid NFTs
NFT marketplace and collection platform combining creator tools, marketplace flows, and liquidity-backed mechanics.
Collection creation plus mintingIndexing and media handlingMarketplace and portfolio flows
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, TanStack Query, shadcn/ui, PostgreSQL, Docker, Prisma, Supabase, tRPC, Zustand, Wagmi, Viem, IPFS, Subgraphs, Moralis
2024
GPT Wars
Interactive 3D marketing site built to support product storytelling and whitelist interest for a blockchain game.
Three.js and WebGLFreelance build ownershipInteractive landing experience
View Case Study
Tech Stack: Next.js, TypeScript, Tailwind CSS, Three.js, WebGL
2023
Dappd Website
Marketing site for a web3 development agency, focused on clarity, credibility, and lead generation.
Responsive marketing siteDesign and content implementationService-led positioning
View Case Study
Tech Stack: Next.js, Tailwind CSS, TypeScript, shadcn/ui
EXPERIENCE
Full-time roles and selected contract work.
Work spanning analytics platforms, agency delivery, interactive web experiences, and transaction-heavy products where strong ownership mattered more than narrow specialization.
Jul 2025 - Mar 2026
Senior Full-Stack Engineer
v21 Studio, Remote, United Kingdom
- Led end-to-end delivery across 25+ client projects, owning architecture, frontend implementation, backend systems, and launch readiness.
- Worked directly with founders and designers to shape scope, technical direction, and engineering standards across design-heavy product builds.
- Shipped production-ready products under tight timelines while keeping performance, scalability, and maintainability in view.
Aug 2024 - Jul 2025
Full-Stack Engineer
ProtoKOLs, Remote, British Virgin Islands
- Built data-rich product surfaces including analytics dashboards, reports, watchlists, activity tracking, and narrative monitoring tools.
- Worked across large social and on-chain datasets supporting workflows around 100K+ influencer profiles.
- Improved backend classification, caching, and API usage, contributing to roughly 40% lower third-party data costs.
Mar 2023 - Jul 2024
Full-Stack Engineer
Dappd, Remote, United States
- Shipped and maintained multiple production applications for clients, together supporting 1M+ user transactions.
- Built indexing and background worker flows to keep interfaces aligned with live on-chain data while reducing latency.
- Worked across frontend implementation, backend APIs, and Web3 integrations for transaction-heavy products.
Apr 2024 - Jun 2024
Contract Full-Stack Engineer
Thinker Friends Studio, Remote, Panama
- Delivered an interactive 3D web experience using Three.js, WebGL, and Next.js to support product storytelling and seed-round fundraising.
- Owned the browser implementation, focusing on smooth interaction, visual polish, and presentation quality.
Jun 2021 - Feb 2023
Full-Stack Engineer and Game Developer
Monkey Empire, Remote, France
- Started on the game-development side before moving deeper into software engineering, working across gameplay systems, backend logic, reward distribution, and token-backed flows.
- Built core gameplay and product systems around reward distribution, progression, and token workflows.
- Helped scale the product to 10,000+ active users and contributed to work tied to a $100K Arbitrum development grant.
OPEN TO SELECT OPPORTUNITIES
Let's build the next version of your product.
Share the product, stage, and problem space. I usually reply within 24 hours.
Based in Sri Lanka, working comfortably across US, UK, and European time zones.