Harish Kumar Gunjalli — Blockchain/Solidity Developer

Expertise in Blockchain and Cryptography (6.5 yr.), Smart Contract (6.5 yr.).

Last verified on May, 2026

Core Skills

Bio Summary

Blockchain engineer with 6+ years in smart contract development using Solidity, Ethereum, Chainlink, and OpenZeppelin, specializing in upgradeable contracts.
Proficient in backend API development with Node.js, AWS Lambda, DynamoDB, and integration of decentralized data analytics via The Graph protocol.
Experienced in DevOps automation for blockchain deployments using Hardhat, Truffle, OpenZeppelin Defender, and Gelato, enhancing system security and scalability.
Holds a Bachelor's degree in Information Science and Engineering with a 9.16 CGPA, certified by Emurgo Academy and Atrium Academy, and recognized for contributions in international hackathons and research conferences.

Technical Skills

Programming Languages	Go, Java, JavaScript, Python, Rust, Solidity, TypeScript
C++ Libraries and Tools	C/C++/C#
JavaScript Frameworks	Express, Node.js, React
JavaScript Libraries and Tools	Web3.js
Databases & Management Systems / ORM	OpenSearch, PostgreSQL, SQL
Amazon Web Services	AWS Bedrock
Blockchain and Decentralized Software	Brownie, Chai, Foundry, Hardhat, Hyperledger, OpenZeppelin, Smart Contract, Truffle
Deployment, CI/CD & Administration	CI/CD
Version Control	Git
Soft Skills	Mentor Aptitude
QA, Test Automation, Security	Mocha, QA
SDK / API and Integrations	RESTful API
Methodologies, Paradigms and Patterns	Scrum
Other Technical Skills	ODBC

Work Experience

Backend Developer - Provenant by Protokol BV (BackOffice analytics for DPP Manager)

Duration: April 2026 - Present
Summary:

Development of BackOffice analytics for DPP Manager to provide detailed insights and management capabilities
The project includes implementing role-based access control (RBAC) for secure system access and managing organizational structures and access permissions

Responsibilities:

Developed BackOffice analytics for DPP Manager.
Implemented role-based access control (RBAC) using Zitadel for secure system access.
Managed organizational structures and access permissions.

Technologies: Zitadel, Backend analytics tools

Blockchain/Solidity Developer - Protokol BV (Self-Repaying Loan Protocol and Blockchain System Automation)

Duration: October 2022 - Present
Summary:

Researched, architected, and built a self-repaying loan protocol with advanced on-chain automation features
Developed blockchain system deployments with automated triggers and price oracle simulations
Created Proof of Concept for upgradeable contracts and built real-time blockchain analytics applications using The Graph protocol

Responsibilities:

Researched and built a self-repaying loan protocol with on-chain automation.
Orchestrated DevOps tasks for blockchain deployments using OpenZeppelin Defender.
Developed upgradeable contract Proof of Concept.
Created applications leveraging The Graph protocol for real-time blockchain analytics.
Engineered RESTful API endpoints using AWS Lambda, DynamoDB, and OpenSearch.
Designed interactive chat modules for AI agents using Bedrock and ExpressJS.
Led prompt engineering for AI agents in financial DApps.
Performed security audits of blockchain codebases via Code4rena, Sherlock, and HackenProof.

Technologies: Solidity, OpenZeppelin Defender, The Graph protocol, AWS Lambda, DynamoDB, OpenSearch, Bedrock, ExpressJS, Code4rena, Sherlock, HackenProof

Software Developer - 2 - Oddz Finance (Oddz Options Trading Platform and Multi-Blockchain Deployment Automation)

Duration: June 2021 - September 2022
Summary:

Automated deployment pipelines for Solidity contracts across multiple blockchains including Arbitrum, BSC, Polygon, and AVAX
Developed and optimized smart contract workflows for the Oddz Options Trading platform and integrated new financial products such as Perpetual Protocol
Built data ingestion architectures and smart contract wrappers for dynamic price and volatility feeds

Responsibilities:

Automated full deployment pipeline for Solidity contracts on multiple blockchains.
Reviewed and optimized trading contests and smart contract workflows.
Authored documentation and proof-of-concept for Perpetual Protocol integration.
Developed NPM modules and configurable contracts for third-party integrations.
Built data ingestion architectures using SubGraph protocol.
Engineered smart contract wrappers for ChainLink and GVol feeds.
Led development and testing for multi-token support and automated reward distributions.
Utilized OpenZeppelin Defender and Gelato for task automation.
Maintained high-quality smart contracts using OpenZeppelin and Uniswap modules.

Technologies: Solidity, Arbitrum, BSC, Polygon, AVAX, SubGraph protocol, ChainLink, GVol, QuickSwapRouter, UniSwapRouter, OpenZeppelin Defender, Gelato, NPM

Software Developer - Magnitude Software (Simba Memphis Drivers and Enterprise Integration)

Duration: July 2018 - June 2021
Summary:

Led a team as product owner and technical lead for Simba Memphis Drivers, managing customer engagement and feature delivery
Delivered critical features such as frozen type support in Simba Cassandra ODBC driver and integrated Veracode for security scanning
Managed quarterly release cycles for multiple enterprise integrations including Shopify, PayPal, Amazon MWS, and Oracle Service Cloud

Responsibilities:

Managed a team of 10+ as product owner and technical lead.
Delivered customer-critical features and ensured timely releases.
Integrated Veracode for security scanning in connectors.
Managed quarterly release cycles for multiple enterprise integrations.
Mentored and onboarded 20+ team members across QA, development, and release processes.
Created integration testing tools reducing developer verification effort by 40%.

Technologies: Simba Cassandra ODBC driver, Veracode, Shopify, PayPal, Amazon MWS, Oracle Service Cloud, ODBC, JDBC

Associate Software Developer - Magnitude Software (Oracle Service Cloud ODBC Connector and Memphis JDBC Core Development)

Duration: July 2017 - June 2018
Summary:

Developed a performant ODBC connector for Oracle Service Cloud from scratch and led a team implementing DML features for Memphis JDBC Core
Authored test automation scripts to reduce testing cycles and contributed to knowledge transfer and onboarding of new engineers

Responsibilities:

Developed ODBC connector for Oracle Service Cloud.
Led team for DML feature implementation in Memphis JDBC Core.
Authored test automation scripts for PowerBI and DrMemory.
Contributed to knowledge transfer and onboarding of engineering hires.

Technologies: ODBC, JDBC, Oracle Service Cloud, PowerBI, DrMemory

Full Stack Blockchain Developer (Training Program) - Emurgo Academy India (Full Stack Blockchain Developer Program)

Duration: August 2019 - April 2020
Summary:

Completed a comprehensive blockchain development program focusing on Ethereum DApps, smart contract development, and Hyperledger Fabric
Gained expertise in Solidity, ReactJS, Truffle, Web3js, GoLang, Node
js, and blockchain network setup and management

Responsibilities:

Developed Ethereum DApps using ReactJS, Truffle, Solidity, and Web3js.
Created smart contracts and interacted with front-end applications.
Worked with IPFS, ICOs, wallets, and various Ethereum tokens.
Developed decentralized applications on Hyperledger using GoLang and Node.js.
Set up Hyperledger Fabric networks and developed fabric chaincode.
Developed RESTful and gRPC services in GoLang.

Technologies: Solidity, Ethereum, ReactJS, Truffle, Web3js, IPFS, Hyperledger Fabric, GoLang, Node.js, Express, RESTful services, gRPC

Education

Bachelor's in Information Science and Engineering at PES Institute of Technology
9.16 CGPA
August 2013 - May 2017

Certification

Certified blockchain developer from Emurgo Academy, India
Certified Uniswap Hook developer from Atrium Academy

How to hire with Upstaff

1

Talk to Our Talent Expert

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

2

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.

3

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

$0

No Hidden Costs

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

x1

One Consolidated Invoice

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

Ready to hire Harish Kumar Gunjalli
or someone with similar Skills?

Book a call with Harish Kumar Gunjalli

Start Hiring