Nanolances — We build
what others
can only
imagine
A product engineering studio. Architecture, code and deploy owned by the person who builds: web applications, on-chain infrastructure and AI running in production — with technical decisions explained and deadlines that hold.
From brief to deploy
Tailored web products
Full applications in Next.js, React and TypeScript: from data modelling to interface design, with performance and SEO measured, not assumed.
Web3 & smart contracts
Solidity on EVM with Foundry, tests and security review. On-chain governance, swaps, attestations and wallet/indexer integrations.
AI inside the product
Agents, RAG and LLM automations that solve one concrete business task — with cost per call, evaluation and fallback defined.
Architecture & performance
Diagnosis of systems that stalled while growing: database, queues, cache, observability and a refactor plan in shippable steps.
Interface & prototype
From wireframe to navigable prototype in days, so you validate with users before spending a sprint building the wrong thing.
Senior squad on demand
Senior reinforcement inside your team for a defined period: code review, technical mentoring and shipping alongside your devs.
Heron
Lancellot
Fullstack engineer and founder of Nanolances, based in Rio de Janeiro. Over six years building web applications and decentralized protocols — from on-chain governance in the Ethereum ecosystem to product platforms serving hundreds of users. Six international hackathons won, including ETHSamba and King of Devs.
At Nanolances, you talk directly to the person building. Scope defined in one conversation, technical decisions justified, and code another team can maintain after the project ends.
Already live in production
Own projects and projects I contributed to as an engineer.
What they say after the deploy
“Delivered in three weeks what the previous team couldn't close in three months. The code came documented and the team could continue on their own.”
“Rare to find someone who understands contracts and interfaces at the same level. We saved an entire hire.”
“Took our MVP from Figma to production ahead of schedule and still flagged two architecture risks nobody had seen.”
“Clear communication with non-technical people. I never had to ask twice about the status.”
“We hired for one feature and kept him for the entire platform. Says a lot.”