Portfolio
Explore my most recent projects and the technical solutions I've architected
Edge Multi-Chain Trading Platform
Led product engineering for a Next.js multi-chain trading platform from concept to production, including swaps, limit orders, trading bots, charts, watchlists, and wallet-based execution across EVM and Solana.
Almanak Strategy Deployment Platform
React/Next.js strategy deployment platform built from zero to production, with internal API integrations and shared authentication, session, and data layers built around Hasura/Nhost and Privy.
Almanak AI Strategy Builder
Integrated the AI Strategy Builder with FastAPI/LangChain and the deployment platform, enabling users to generate and deploy strategies in a single flow.
Obligate Platform
Complex React platform taken over from an external agency, redesigned and rebuilt in Next.js, then migrated from a private Hyperledger network to public Solana.
Selected Impact
Almanak platforms
Built two React/Next.js platforms from zero to production, serving 20k+ daily sessions at peak and supporting products with $160M+ in total value locked.
Edge transaction reliability
Designed adaptive retry and recovery flows that reduced Solana swap failure rates for volatile and low-liquidity tokens from approximately 40% to 5%.
Obligate frontend transformation
Took over and extended a complex React frontend, then led product redesign, a complete rebuild in Next.js, and frontend architecture during the migration from private Hyperledger infrastructure to public Solana.
Experience Timeline
Lead Software Engineer
Built two React/Next.js platforms from zero to production, serving 20k+ daily sessions at peak and supporting products with $160M+ in total value locked.
Owned frontend architecture and delivery across both platforms, as well as internal API integrations and shared authentication, session, and data layers built around Hasura/Nhost and Privy.
Integrated the AI Strategy Builder with FastAPI/LangChain and the deployment platform, enabling users to generate and deploy strategies in a single flow.
Expanded into full-stack ownership across frontend, APIs, databases, and smart contracts, shaping data flows between backend services, browser wallets, and on-chain systems.
Owned critical launch flows across frontend, APIs, databases, and smart contracts, stabilising production during traffic spikes, bot activity, and last-minute launch changes.
Lead Product Engineer
Led product engineering for a Next.js multi-chain trading platform from concept to production, including swaps, limit orders, trading bots, charts, watchlists, and wallet-based execution across EVM and Solana.
Designed adaptive retry and recovery flows that reduced Solana swap failure rates for volatile and low-liquidity tokens from approximately 40% to 5%.
Owned frontend architecture, supporting backend services, and third-party integrations across market data, authentication, wallets, real-time monitoring, and transaction execution.
Lead Software Engineer / Senior Frontend Engineer
Took over and extended a complex React frontend, then led product redesign and complete rebuild in Next.js.
Led frontend architecture during the platform's migration from a private Hyperledger network to public Solana, redesigning integrations, data flows, and transaction handling around the existing Node.js backend.
Made hiring decisions for frontend and design roles alongside the CTO and backend lead, supported engineers through regular 1:1s, and worked with product stakeholders to shape roadmap and delivery.
Core Expertise
Product discovery & 0-to-1 delivery
Frontend architecture
React / TypeScript / Next.js
Full-stack development
Node.js / GraphQL / REST APIs
System design
Let's Connect
Tomas Kasnauskas
Lead Software Engineer | Frontend-Leaning Full-Stack Engineer
t.kasnauskas@gmail.com
Lithuania (EU, Remote)