Open to opportunities

Fikayomi Sanni

@fikayomisanni

Message

I build high-throughput fintech, distributed systems, and platform infrastructure serving millions of users.

Nigeria

Message

What I'm looking for

I'm looking to lead hands-on backend, distributed systems, fintech infrastructure, platform engineering, or blockchain work where I can build reliable systems at scale and mentor engineering teams.

I've architected payment infrastructure at eTranzact Global UK processing 12M+ monthly transactions across seven countries, while building Banking-as-a-Service APIs used by nine fintechs to manage 3M+ customer accounts.

At Slide, I built Kafka-based logistics microservices that reduced inter-service latency by over 200ms and delivered 99.9% uptime. At Sustain Hawaii, I scaled PERSEUS.id to support over 4 million concurrent users at 99.99% availability.

I'm currently leading blockchain and platform engineering work at Valchain AG and Ductape, building NFT marketplace, decentralized identity, cloud storage, data-access, and developer-platform systems. I stay hands-on with TypeScript, Node.js, NestJS, AWS, Kafka, PostgreSQL, Redis, Kubernetes, and Solidity while mentoring engineers and setting architecture standards.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Valchain AG

Mar 2025 - Present (1 year 5 months)

Architected and led development of blockchain gaming platforms, including NFT minting and marketplace systems, and engineered automated commission and multi-level distribution mechanisms.

TypeScript NestJS Solidity EVM Web3.js PostgreSQL Redis AWS Docker REST APIs Event Driven Architecture Smart Contracts NFT Marketplace Decentralized Identity GitHub Actions

Current

Lead Software Engineer

Current

Ductape

Aug 2024 - Present (2 years)

Led backend platform engineering for a composable developer platform, designing unified data-access layers and cloud-agnostic storage abstractions.

TypeScript Go Java NestJS MongoDB PostgreSQL Redis Azure Blob Storage Google Cloud Storage REST APIs SDK Development Webhooks Event Driven Architecture Docker CI CD GitHub Actions

Senior Backend Engineer

MMSDA GmbH

Oct 2023 - Jul 2024 (9 months)

Engineered backend infrastructure for financial consulting tools, including data pipelines and reporting analytics, and integrated Stripe for subscription management.

TypeScript NestJS PostgreSQL Stripe REST APIs Webhooks Docker AWS GitHub Actions

Blockchain Developer

PT IURIS

Jul 2023 - Oct 2023 (3 months)

Developed and deployed Solidity smart contracts for DAO governance, token creation, and ICO distribution, and built NestJS service interfaces for backend integration.

Solidity Hardhat TypeScript NestJS Web3.js Ethereum Smart Contracts REST APIs

Team Lead — Logistics Services

Slide

Sep 2021 - Oct 2023 (2 years 1 month)

Architected an event-driven logistics platform using Kafka and microservices, reducing inter-service latency and improving throughput, and led reliability initiatives achieving 99.9% uptime.

TypeScript NestJS Kafka RabbitMQ PostgreSQL Redis AWS Lambda Docker REST APIs Event Driven Architecture Microservices Deliverect Careem API Tookan API Barq API

Lead Backend Developer

eTranzact Global UK

Mar 2019 - Apr 2023 (4 years 1 month)

Architected and operated a payment switch processing 12M+ monthly transactions across 7 countries, led a team of 14 engineers, and built Banking-as-a-Service APIs adopted by 9 fintech companies.

TypeScript NestJS PostgreSQL MySQL Redis RabbitMQ AWS RDS Docker REST APIs GraphQL Event Driven Architecture Distributed Systems Microservices Payment Switching Banking as a Service GhIPSS PAPSS RSwitch

Senior Software Engineer

Sustain Hawaii

Sep 2021 - Apr 2022 (7 months)

Engineered third-party integrations with CDC branches for COVID-19 reporting and scaled the PERSEUS.id platform to support over 4 million concurrent users.

TypeScript NestJS PostgreSQL AWS REST APIs Docker Firebase CDC Integration Event Driven Architecture

Software Engineer

Startupia LLC

Apr 2016 - Mar 2019 (2 years 11 months)

Developed DBooks, a DAO-based content distribution platform, ValorExchange, a cryptocurrency auction platform, and BuyNow, a full-stack e-commerce platform.