Addis B
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The client satisfaction rating is the weighted average of client ratings, with weights based on reviewed work hours. When no client rating exists, the approval fraction (approved vs. reviewed work hours) determines it.
If the client satisfaction rating exceeds the overall rating, it becomes the star rating. In the absence of client ratings, if the average client interview rating is higher than the overall rating, it becomes the star rating. If no data is available, the star rating defaults to the internal interview score.
The client satisfaction rating is the weighted average of client ratings, with weights based on reviewed work hours. When no client rating exists, the approval fraction (approved vs. reviewed work hours) determines it.
If the client satisfaction rating exceeds the overall rating, it becomes the star rating. In the absence of client ratings, if the average client interview rating is higher than the overall rating, it becomes the star rating. If no data is available, the star rating defaults to the internal interview score.
Senior Software Developer(Blockchain) Preferred Title
$31.25 /hr $ 48.0K /yr Hourly Rate and Yearly Salary
Overview
Basic Summary
LD Talent History - Average Count of Messages/Day 0.4
- Project Completion Rate 2/4
- Interview Acceptance Rate 4/6
- Timezone Overlap 12h PST, 54h UTC
- No. of Onboarding MCQs Completed 3
- Code Quality 1 attributes
- Phone Number Verified More details
- Software Engineering Process 3.0/5
- Design Practice 3.0/5
- Design Theory 3.0/5
- Technical Breadth 3.0/5
- Logical Thinking 3.0/5
- Technical Strength 4.0/5
- System Design 3.0/5
- Productivity and Responsiveness 3.0/5
- Teamwork 3.0/5
- Agile Development Process 3.0/5
- Intellectual Merit 3.0/5
- English Communication 3.0/5
- Documentation 3.0/5
- Desktop Mac
- Phone Android
- Tablet Android Tablet
- Member Since May 13, 2023
- Profile Last Updated Apr 27, 2026
- Last Activity April 27, 2026, 12:43 p.m. UTC
- Location Ethiopia
Profile Summary
Full-Stack & Blockchain Engineer with experience building secure financial systems and DeFi protocols. Proven track record delivering production systems reaching $42M+ TVL and processing $600K+ in transactions on launch day. Strong expertise in Solidity, Node.js, TypeScript, and modern frontend frameworks. Experienced in gas optimisation, smart contract security, and scalable backend architecture.
Skills
Total Experience: 5 years
Hardhat (2E, 5Y)
2 experiences, across 5 yearsSolidity (3E, 5Y, 1C)
3 experiences, across 5 years, with 1 courseTypescript (4Y)
4 years of experienceSlither (4Y)
4 years of experiencePostgres (4Y, 1C)
4 years of experience, with 1 courseEthers.js (4Y)
4 years of experienceJavaScript (2E, 3Y, 1C)
2 experiences, across 3 years, with 1 courseTailwind CSS (2E, 4Y)
2 experiences, across 4 yearsAWS (2E, 3Y)
2 experiences, across 3 yearsPostgresql (2E, 3Y)
2 experiences, across 3 yearsMocha (2Y, 1C)
2 years of experience, with 1 courseNodejs (2Y)
2 years of experienceCSS (4Y, 1C)
4 years of experience, with 1 courseRest Api (2Y)
2 years of experienceAWS S3 (2Y)
2 years of experienceSvelte (2Y)
2 years of experienceNextJS (2Y)
2 years of experienceHTML (2Y, 1C)
2 years of experience, with 1 courseEthereum (2Y, 1C)
2 years of experience, with 1 courseERC20 (2Y)
2 years of experienceFoundry (2Y)
2 years of experienceEthereum Openzeppelin (2Y)
2 years of experienceChainlink (2Y)
2 years of experienceDocker
Go
Telegram Api
Terraform
Makefile
CSS Flex (1C)
1 courseCSS preprocessors (1C)
1 coursePostman (1C)
1 courseREST (1C)
1 courseRuby on rails (1C)
1 courseReact (1C)
1 courseBootstrap (1C)
1 courseRuby (1C)
1 courseweb3.js (1C)
1 course
Weekly Availability
Timezone Overlap with 06 - 21 per Week: 12h PST, 54h UTC
Day
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
UTC
05 - 15
05 - 15
05 - 15
05 - 15
05 - 15
05 - 15
PST
22 - 08
22 - 08
22 - 08
22 - 08
22 - 08
22 - 08
Vetting
- Interview Data
- Software Engineering Process
- Design Practice
- Design Theory
- Technical Breadth
- Logical Thinking
- Technical Strength
- System Design
- Productivity and Responsiveness
- Teamwork
- Agile Development Process
- Intellectual Merit
- English Communication
- Documentation
- Code Quality
- Templates
Experience
Lead Blockchain Engineer
Contract
Aug 2025 - Present
Evolve NP Company
Finance Industry
- Architected secure smart contracts for on-chain nonprofit fundraising on Ethereum using Solidity and Foundry. Additionally, used ERC20 from Ethereum Openzeppelin for the fundraising token.
- Built Uniswap v4 pools/hooks with TWAP-based price protection.
- Automated recurring fundraising using Chainlink Automation.
Full-stack Software Developer
Passion Project
Jan 2026 - Apr 2026
Self-Employed Company
Arts and Entertainment Industry
Project: Bingo Mini app
- Developed a full-stack platform using Go (backend) and Next.js (frontend), leveraging PostgreSQL, AWS, Docker, Terraform, and Makefile for infrastructure and deployment.
- Implemented secure Telegram WebApp authentication and webhook architecture using the Telegram API with Go-based services.
- Built a transactional wallet and admin dashboard for payments and revenue tracking, utilizing PostgreSQL for data storage and AWS for scalable infrastructure.
Full-Stack Web3 Developer
Employment
Jun 2023 - Jan 2026
Holdex Limited Company
Finance Industry
Project: Clearpool Finance
- Designed and deployed DeFi lending protocols reaching $42M+ TVL using Hardhat as a framework and TypeScript for testing and deployment scripts.
- Engineered a smart contract architecture that enabled $600K+ in transactions on launch day. Indexed and aggregated blockchain data using Subgraph for easy access on the UI.
- Developed dynamic and fixed APR lending systems. Used the Ethers.js library to read from and write to the blockchain.
- Reduced gas costs by 30% through optimised contract logic. Used Slither to identify potential vulnerabilities in the smart contracts before deployment.
- Implemented CI/CD pipelines for automated Subsquid indexing. Used TypeScript to process blockchain data and stored the aggregated data in a PostgreSQL database.
Lead Software Developer
Contract
Sep 2024 - Aug 2025
Rira Technlogies Company
Food and Agriculture Industry
Project: Eth-farm
- Built a platform connecting Ethiopian farmers, cooperatives, warehouses, and banks to enable crop storage and collateral-backed loans using PostgreSQL, REST APIs, and AWS.
- Implemented secure digital documentation, real-time product assessments, and streamlined loan approval workflows using Svelte, HTML, Tailwind CSS and AWS S3.
- Secured a patent for the platform’s innovative agricultural finance model while leveraging scalable cloud infrastructure on AWS.
Junior Software Developer(Blockchain)
Employment
Jun 2022 - Jun 2023
Whrrl Company
Finance Industry
Project: Bru Finance
- Designed upgradeable smart contracts using the OpenZeppelin proxy pattern and Solidity with Hardhat and JavaScript.
- Built a cross-chain bridge between public and private blockchain networks using Nodejs and Solidity.
- Improved deployment reliability through structured testing workflows using Mocha.
Junior Blockchain Developer
Contract
Aug 2021 - Jun 2022
Kryptup Company
Finance Industry
Project: Kyrptup
- Developed and tested smart contracts for DeFi platforms using JavaScript and Solidity.
- Implemented multi-signature wallet architecture with Solidity and integrated it into a NextJS front end using HTML and Tailwind CSS.
- Strengthened protocol security with non-reentrancy guards in Solidity and built supporting UI components with JavaScript and Next.js.
Qualifications
Education
Bahir Dar University
Oct 2014 - Jul 2019
B.Sc (Automotive Engineering)
Courses
Microverse