Emmanuel Akinroye — Senior Blockchain Developer

Expertise in Blockchain and Cryptography (5.0 yr.), Smart Contract (5.0 yr.).

Last verified on May, 2026

Core Skills

Bio Summary

Senior Blockchain Developer with 5+ years designing and deploying smart contracts on Ethereum, EVM-compatible chains, and Solana using Solidity and Rust.
Expertise in full-stack DApp development, integrating Web3 libraries (Ethers.js, Web3.js), wallet SDKs, and event-driven backend architectures.
Proven track record optimizing gas costs, securing contracts with reentrancy guards and access control, and conducting internal audits to ensure robust security.
Skilled in cross-chain token bridges, DeFi protocol design, and real-time systems handling.
Strong background in Node.js, TypeScript, React, Next.js, REST/GraphQL APIs, Agile methodologies, and CI/CD pipelines.

Technical Skills

Programming Languages	Rust, Solidity, TypeScript
JavaScript Libraries and Tools	Ethers.js, Web3.js
JavaScript Frameworks	Ext JS, NestJS, Node.js, React
Cloud Platforms, Services & Computing	AWS
Methodologies, Paradigms and Patterns	Agile
Virtualization, Containers and Orchestration	Docker
Blockchain and Decentralized Software	Ethers.js, Solana
Version Control	Git, Github Actions
SDK / API and Integrations	GraphQL, RESTful API
Mail / Network Protocols / Data transfer	WebSockets

Work Experience

Blockchain Developer and Backend Engineer - Cryptrapay (Cryptrapay (Bill Payments and DeFi Off-Ramping Platform))

Duration: Aug 2025
Summary: Cryptrapay is a bill payments and DeFi off-ramping platform that facilitates seamless payment flows on the Solana blockchain using SPL tokens and SOL wallets.
Responsibilities:

Designed and deployed Solana smart contracts in Rust for on-chain payment flows.
Integrated SPL token logic and SOL wallet SDKs into a production DApp.
Built and integrated blockchain solutions with existing backend systems via REST APIs.
Optimized smart contract performance and gas costs.
Implemented robust error handling, state management, and fallback logic.
Developed event-driven backend architecture for asynchronous payment processing.

Technologies: Solana, Rust, SPL tokens, SOL wallet SDKs, REST APIs, event-driven backend architecture

Blockchain Developer and Full-Stack Engineer - Allark (Allark (Token Prelaunch Trading Platform))

Duration: Jul 2025
Summary: Allark is a token prelaunch trading platform built on Solana, enabling secure token locking, release mechanics, and wallet authentication for early-stage token trading.
Responsibilities:

Developed Solana smart contracts in Rust for prelaunch token trading.
Built a full-stack DApp with React and TypeScript frontend.
Integrated Web3 wallet SDKs for seamless crypto-native user experience.
Engineered WebSocket infrastructure handling 1,000+ concurrent sessions with low latency.
Integrated multiple external blockchain APIs and data sources.
Applied circuit breaker patterns for high system availability.

Technologies: Solana, Rust, React.js, TypeScript, Web3 wallet SDKs, WebSocket, blockchain APIs

Blockchain Developer - Neatio (Neatio (EVM Blockchain))

Duration: 2023 – 2024
Summary: Neatio is an EVM-compatible blockchain project focused on enabling secure cross-chain token bridges for trustless asset transfers between blockchains.
Responsibilities:

Designed and deployed Solidity smart contracts for cross-chain token bridge.
Conducted internal smart contract audits and resolved vulnerabilities.
Applied security best practices including reentrancy guards and access control.
Integrated blockchain solutions with backend systems via REST APIs.
Built developer guides to reduce integration time.
Collaborated with cross-functional teams in Agile sprints.

Technologies: Ethereum, Solidity, REST APIs, Agile methodologies

Blockchain Developer - Blockride (Blockride (Mobility Marketplace, Africa))

Duration: 2022 – 2023
Summary: Blockride is a mobility marketplace in Africa enabling tokenized fractional bus ownership and on-chain mobility financing through blockchain technology.
Responsibilities:

Designed and deployed Solidity smart contracts for tokenized fractional ownership.
Built a DApp marketplace transaction engine with atomic smart contract operations.
Integrated smart contract events with backend systems for real-time tracking.
Implemented multi-step on-chain verification workflows.

Technologies: Ethereum, Solidity, smart contracts, DApp, backend integration

Blockchain Developer - Bole (Bole (Decentralized Exchange))

Duration: 2021 – 2022
Summary: Bole is a decentralized exchange platform featuring automated market maker (AMM) logic, token swap mechanics, and liquidity pool management on Ethereum.
Responsibilities:

Built full-stack DApp and Solidity smart contracts for decentralized exchange.
Developed AMM logic, token swap mechanics, and liquidity pool management.
Wrote unit and integration tests using Hardhat.
Applied gas optimization techniques.
Integrated smart contracts with React frontend via Ethers.js and Web3.js.

Technologies: Ethereum, Solidity, Hardhat, React.js, Ethers.js, Web3.js

Full-Stack Developer - Remax Real Estate (Remax Real Estate (MaltaHomeSearch))

Duration: 2019 – 2021
Summary: MaltaHomeSearch is a real estate platform delivering advanced geolocation search and filtering workflows to serve over 1,000 monthly active users.
Responsibilities:

Delivered production platform using React and Next.js frontend with Node.js backend.
Designed and implemented 15+ RESTful API endpoints.
Integrated multiple third-party APIs.
Implemented advanced geolocation search and filtering workflows.

Technologies: React.js, Next.js, Node.js, REST APIs

Education

Doctor of Veterinary Medicine (DVM)
University of Ibadan | Self-taught blockchain developer, delivering production DApps and smart contract systems throughout the academic program.
2017 – 2024

Certification

Udemy: React and Next.js
Udemy: Rust Programming
Sololearn: HTML, CSS, JavaScript

How to hire with Upstaff

Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.

Meet Carefully Matched Talents

Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person.

Validate Your Choice

Bring new talent on board with a trial period to confirm you hire the right one. There are no termination fees or hidden costs.

Why Upstaff

Upstaff is a technology partner with expertise in AI, Web3, Software, and Data. We help businesses gain competitive edge by optimizing existing systems and utilizing modern technology to fuel business growth.

Real-time project team launch

<24h

Interview First Engineers

Upstaff's network enables clients to access specialists within hours & days, streamlining the hiring process to 24-48 hours, start ASAP.

x10

Faster Talent Acquisition

Upstaff's network & platform enables clients to scale up and down blazing fast. Every hire typically is 10x faster comparing to regular recruitement workflow.

Vetted and Trusted Engineers

100%

Security And Vetting-First

AI tools and expert human reviewers in the vetting process is combined with track record & historically collected feedbacks from clients and teammates.

~50h

Save Time For Deep Vetting

In average, we save over 50 hours of client team to interview candidates for each job position. We are fueled by a passion for tech expertise, drawn from our deep understanding of the industry.

Flexible Engagement Models

Custom Engagement Models

Flexible staffing solutions, accommodating both short-term projects and longer-term engagements, full-time & part-time

Unique Talent Ecosystem

Candidate Staffing Platform stores data about past and present candidates, enables fast work and scalability, providing clients with valuable insights into their talent pipeline.

Transparent

No Hidden Costs

Price quoted is the total price to you. No hidden or unexpected cost for for candidate placement.

One Consolidated Invoice

No matter how many engineers you employ, there is only one monthly consolidated invoice.

Ready to hire Emmanuel Akinroye
or someone with similar Skills?

Book a call with Emmanuel Akinroye

Start Hiring