Isaac Adewumi

Remote, Berlin

• Built Solana support across Rotki's backend, including spam token filtering, transaction decoding, and chain-specific asset handling.
• Designed and implemented historical balance tracking from scratch using archive node queries, balance snapshotting, cache invalidation, and normalized accounting logic.
• Refactored fiat valuation logic from hardcoded USD assumptions into user-selected currency support across 10+ API endpoints.
• Added and maintained protocol integrations for Balancer v1/v2, Aura Finance, Beefy, Yearn, StakeDAO, and other DeFi systems.
• Expanded exchange and wallet support with Coinbase ED25519 API key handling, Binance Convert trade support, and additional transaction parsing paths.

Nigeria

• Built backend features for insurance policy management and provider onboarding on an API-first insurance infrastructure platform.
• Developed workflows that helped businesses embed and distribute insurance products across African markets.
• Worked across backend and product requirements to turn insurance operations into maintainable APIs and internal tooling.

Part-time, Remote

• Cofounded FlashPay, one of the early Algorand payment-link platforms, and helped raise over $40K from the Algorand Foundation.
• Led development of the Django backend service for payment links, merchant APIs, API keys, wallet setup, transaction verification, webhooks, and revenue reporting.
• Built payment lifecycle infrastructure for creating, tracking, verifying, and reconciling Algorand-based payments.
• Developed the JavaScript SDK used by merchants to initialize payments, configure supported assets, handle callbacks, and integrate FlashPay into client applications.
• Designed developer-facing API flows and maintained integration documentation for merchants accepting ALGO, USDC, USDT, and other Algorand-based assets.
• Owned backend architecture, SDK design, API flows, and technical delivery as technical cofounder and lead engineer.

Remote, Berlin

• Replaced Rotki's Uniswap V3 subgraph dependency with a fully on-chain data retrieval approach.
• Reduced Electron application memory usage by ~30% by revamping asset management endpoints and response payload handling.
• Added support for Average Cost Basis and HIFO accounting methods.
• Integrated transaction decoding for Uniswap V2/V3, Sushiswap, Curve, MakerDAO, and related DeFi protocols.
• Added Taproot BTC address support, per-user notes, and spam NFT filtering.

Remote, Lagos

• Built a Swift native module to integrate the Algorand SDK into a React Native application.
• Developed backend API endpoints with Django REST Framework for core product workflows.
• Implemented wallet integration flows for the web application.
• Contributed across mobile, web, and backend surfaces for an Algorand grant-backed product.

Remote

• Built backend endpoints and UI components for a hospitality management application using Django.
• Set up CI workflows and improved test coverage across core application paths.
• Worked across frontend and backend tasks in a small delivery-focused engineering team.

Hybrid, Lagos

• Built a product landing page using Django.
• Worked on an authentication system for IoT device integration using Django Channels.

Remote

• Built web applications and backend systems for clients using Django, JavaScript, TypeScript, Flask, and other web technologies.
• Developed Django-based e-commerce websites, including product catalogues, checkout flows, admin tooling, and payment-related workflows.
• Built a real-time end-to-end encrypted CLI chat application for client use, covering message transport, encryption flow, and terminal-based user interaction.
• Worked directly with clients to scope requirements, deliver production-ready features, and maintain deployed applications.