Summary
Seyi O. has extensive skills as a product engineer with over six years of experience in building backend services and web infrastructure. Seyi has a strong proficiency in various programming languages, including TypeScript, Go, Ruby on Rails, Python, Rust, and YAML. His experience extends to working with diverse datastores and messaging systems such as Postgres, MongoDB, DynamoDB, Redis, Google Pubsub, Bull MQ, and SQS. Seyi has also demonstrated proficiency in cloud providers like AWS, Google Cloud Platform, Heroku, Render, and Cloud Flare. Throughout his career, he has successfully led and maintained services for global payment facilitation using crypto, implemented fraud reduction measures, improved cloud infrastructure efficiency, and enhanced user satisfaction through robust backend development. His passion for fintech, DeFi, and blockchain technologies, combined with his impressive technical skills, make him an invaluable asset to any team.
Meet Seyi O.
Assessment Scores
Perfect score on SQL Question, Difficulty Hard
Great score on Two Algorithm Questions, Difficulty Medium
Good score on LRU Cache Question, Difficulty Medium
Perfect score on Node.js Age Counting
Perfect score on Node.js Debugging JSON Data
Perfect score on Node.js CSV to JSON
Experience
Memecaster
Software Consultant
Remote
Apr 2024 — Present
Implemented price feeds of curated Farcaster coins on Base and Solana.
Implemented automated smart contract and EVM interactions leveraging ERC-2612 for gasless approvals on ERC 712 and 1155 tokens.
Implemented support for seamless and secure chain-agnostic and decentralized trading leveraging Account Abstraction.
Contributed to a cross-chain & decentralized betting experience leveraging popular bridges (Bungee, Lifi), Polymarket, and Account Abstraction.
Built data pipelines that index and filter thousands of events from Farcaster channels into a curated feed, allowing traders to make sentiment-based decisions on assets.
Technologies:
Golang
Nodejs
0x APIs
eth-go
Viem
Ethereum
Helicarrier Inc.
Senior Software Engineer
Remote
Mar 2022 — Mar 2024
Contributed to a trustless peer-to-peer (P2P) on/off ramp leveraging ERC 4337 and zkP2p.
Improved fiat payout completion success rates by integrating fiat payout redundancies, introducing smarter routing, and retry mechanisms.
Cut fraud by over 90% and chargebacks by introducing unique identification and AML features.
Contributed to over 45% month-on-month growth by introducing rapid experimentation and implementation sprints.
Reduced cloud infrastructure costs by over 250% by switching cloud infra providers in a data migration sprint that saw migrations of thousands of users and thousands of transactions and addresses.
Maintained 99% uptime by enforcing adherence to CI/CD best practices, leveraging Infrastructure as code, and weekly deployments.
Improved user satisfaction by enhancing user analytics and customer support efficiency with internal tools like Retool, Metabase, Mezmo (LogDNA), and Sentry.
Contributed to maintaining the wallet infrastructure for Bitcoin, Ethereum, and Tron Addresses.
Technologies:
Ruby/Rails
Typescript
Go
NodeJs
Retool
Postgres
Olog.me
Software Engineer
Remote
Jan 2020 — Feb 2022
Contributed to improved user retention and engagement with notification services.
Led the implementation of CD strategy for serverless backend using infrastructure as code (YML, CDK for cloud formation).
Slashed developer onboard time by over 50% by testing and documenting all codebases.
Onboarded and supervised younger engineers.
Technologies:
Typescript
Node.js
AWS Lambda
DynamoDB
React (Redux)
React Native
Shopthru
Software Consultant
Part-Time
Sep 2022 — Feb 2023
Set up ETL pipelines and analytics that produced genuine insight into the market segment and the utility of the product.
Improved UX by performing research into wallet libraries and their impact on first-time crypto users.
Investigated and fixed high-impact bugs and created documentation policies and guidelines.
Built the backend systems for a new product line, Deals marketplace, to stimulate sales growth and customer loyalty for users and onboard new people into crypto.
Technologies:
Nodejs
React
Ethers.js
GCP
Docker
mixpanel
Retool
MongoDb
Evolucionar Consulting
Software Developer
Remote
Jan 2018 — Feb 2020
Designed, prototyped, and coordinated a team that built data analytics software to measure and report IT adoption in government offices nationwide.
Built E-commerce sites for clients.
Technologies:
NodeJs
Laravel
wordpress
Google APIs
Projects
Lighthouse
An API for reporting actions of fraudulent users in a GDPR-compliant manner to be shared by fintech operators, leveraging AWS lambda functions in Golang and Nodejs.
David’s Sling
A trading bot written in Rust that implements trading strategies (like DCA, limit orders, stop loss, etc.) for Solana crypto traders.
Education
B.Eng
2011 - 2016
Covenant University
Nigeria
