Sudheer KondamuriGet in touch
Blockchain & Systems DeveloperPortfolio / 2026

SudheerKondamuri.

Computer Science student specializing in decentralized protocols, high-performance backends, and secure distributed systems.

Explore the work Get in touch
A working methodThree principles / one practice
Three connected paths through a working practiceAn abstract drawing connects three strands. Select a principle below to follow its path.
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Invariant tests and adversarial thinking come before low-level state mutation.

Open for Web3, Protocol & Systems Engineering Roles
Andhra Pradesh, India01 / 06
02 / Approach

Make the difficult parts visible.

A working principle

Security is not a layer added at the end. It is how the architecture starts.

More about me

I work at the seam between protocol logic and the systems that carry it. The goal is software that holds up under scrutiny.

Fully committed to the philosophy of life-long learning, I’m a full-stack and smart contract developer with a deep passion for Solidity, JavaScript, and decentralized web applications. The unique combination of rigorous security, web design logic, and the excitement of never running out of new decentralized protocols to discover, drives my passion for Web3 development. When I’m not coding, I like to spend my time customizing Linux systems, gaming, and exploring new tech.

01

Threat before theory

Invariant tests and adversarial thinking come before low-level state mutation.

02

Mechanics matter

Storage packing, nonce domains, gas profiles, and failure modes are engineering material.

03

Ship the proof

The work is documented as protocols, tests, and working systems, not just diagrams.

03 / Field notes

A practice built in public.

From internships to independent protocol research, each role has been a closer look at how real systems fail and recover.

2026 - PresentBlockchain & Protocol DevelopmentOpen Source & Security Research
Research & Open Source / Remote

Auditing smart contract attack surfaces and engineering decentralized financial infrastructure.

  • Deconstructed complex EVM system logic to identify reentrancy, access control, and oracle vulnerabilities
  • Implemented secure UUPS upgradeability patterns and benchmarked on-chain gas consumption profiles
  • Authored rigorous unit and invariant testing suites utilizing the Foundry framework
SolidityFoundryEthereumChainlink OraclesWeb3.js
2025Full-Stack Developer InternTechnical Hub
Internship / Andhra Pradesh, India

Engineered and integrated cross-platform mobile and web features using Flutter, connecting dynamic client interfaces to robust RESTful APIs.

  • Developed and maintained cross-platform client applications using Flutter and responsive UI components
  • Integrated scalable RESTful API endpoints and optimized client-server data synchronization
  • Maintained rigid version control and code quality standards across unified Git workflows
  • Troubleshot environment dependencies and improved application deployment reliability
FlutterRESTful APIsJavaScriptTypeScriptDockerGitLinux SystemsSQL
2024Software & Systems DevelopmentIndependent & Academic Projects
Academic & Projects / India

Designed core software applications with an emphasis on automation, systems scripting, and user-centric flows.

  • Programmed custom automation utilities and command-line interfaces using Python, TypeScript, and Bash
  • Applied strict user-centric design paradigms verified by an NPTEL certification in Human-Computer Interfaces
  • Managed database schemas and state synchronization for collaborative software networks
TypeScriptPythonPostgreSQLLinuxBashHTML5/CSS3
View résumé
04 / Selected work

Protocols with a point of view.

06 open-source protocols / Architecture, decisions, implementation.

Full archive
Study 01Cross-Chain Infrastructure2024 - Present

Omnichain Asset Bridge

A local two-chain asset bridge with a TypeScript relayer and cross-chain governance. Features confirmation waiting, exponential-backoff retry, and on-chain signature/nonce replay protection.

SolidityTypeScriptViemSQLiteFoundryEVM Protocols
Read case study Source code
Architecture / Two-chain asset bridge
Omnichain Asset Bridge: select an annotation below to inspect the architecture.SOURCE CHAIN01 / ESCROW02 / RELAYERDESTINATION03 / VERIFY04 / PERSIST & RETRY
[01]

BridgeVault.sol: Escrows user tokens on Source Chain, emitting an indexed BridgeDeposit event with nonce, recipient, and amount.

Engineering focus

Preventing Cross-Chain Replay Attacks

Active / Tested
Study 02GameFi / Smart Contracts2024

Advanced NFT Card Combination System

A dual-layer smart contract GameFi architecture featuring a traditional burn-and-mint engine and a novel reversible fusion staking system that prevents botting via 100-block cooldown mappings.

SolidityHardhatNode.jsDockerRarity LogicEVM
Read case study Source code
Architecture / GameFi / Smart Contracts
Advanced NFT Card Combination System: select an annotation below to inspect the architecture.ERC-721ERC-721ERC-721BURN / MINTFUSION100-BLOCK COOLDOWN
[01]

CraftingEngine.sol: Verifies valid 3-card recipe combinations and executes atomic burning before minting upgraded metadata.

Engineering focus

Flash-Loan and Front-Running Exploits

Completed / Open Source
Study 03DeFi / Full-Stack DApp2024

DeFi Staking Protocol

A multi-pool staking protocol featuring flexible and locked staking models with early withdrawal fees, emergency exit bypasses, and an interactive real-time dashboard.

SolidityNext.jsHardhatethers.jsReactTailwind CSS
Read case study Source code
Architecture / DeFi / Full-Stack DApp
DeFi Staking Protocol: select an annotation below to inspect the architecture.STAKING POOLS01 / PRINCIPAL02 / REWARDS03 / EXIT
[01]

StakingPool.sol: Manages principal deposits, lock timestamps, and reward token distributions.

Engineering focus

Precision Loss in Second-by-Second Accruals

Completed / Open Source
Study 04Smart Contract Security / Upgradeability2024

UUPS Upgradeable Token Vault

A production-grade, three-tier upgradeable smart contract system implementing UUPS V1-V3 implementations with secure storage layouts, yield calculations, and delayed timelocked withdrawals.

SolidityHardhatOpenZeppelin UUPSAccessControlFoundry
Read case study Source code
Architecture / Smart Contract Security / Upgradeability
UUPS Upgradeable Token Vault: select an annotation below to inspect the architecture.V3V2V1uint256[50] / STORAGE GAPERC-1967PROXY
[01]

VaultV1.sol: Base deposit and withdrawal accounting with initializable construction.

Engineering focus

Preventing Storage Layout Collisions

Completed / Open Source
Study 05Governance / DeFi Infrastructure2024

Multi-Tier DAO Treasury

A decentralized governance system featuring square-root weighted (anti-whale) quadratic voting power and dynamic spending policies where quorums and voting periods scale with requested funds.

SolidityFoundryOpenZeppelinAccessControlQuadratic Voting
Read case study Source code
Architecture / Governance / DeFi Infrastructure
Multi-Tier DAO Treasury: select an annotation below to inspect the architecture.SMALL3 DAYSLOW QUORUMMEDIUM7 DAYS20% QUORUMLARGE14 DAYS40% QUORUMPROPOSAL CONTROLLER
[01]

Tier 1 (Small Grants): Low quorum, 3-day vote duration, instant execution upon passage.

Engineering focus

Gas-Efficient Integer Square Root on EVM

Completed / Open Source
Study 06Cryptography / Smart Contract Security2024

Auth-Governed Secure Vault

A high-security ETH vault using off-chain ECDSA (EIP-712) signature validation, modular external Authorization Manager, and on-chain nonce replay protection to eliminate reentrancy risks.

SolidityFoundryDockerECDSAEIP-712 Signatures
Read case study Source code
Architecture / Cryptography / Smart Contract Security
Auth-Governed Secure Vault: select an annotation below to inspect the architecture.STATE / AUTHORIZATION01 / VAULT02 / SIGNATURE03 / NONCE
[01]

SecureVault.sol: Holds ETH reserves and executes payouts only upon valid signature submission.

Engineering focus

Signature Malleability in ecrecover

Completed / Open Source
05 / Working stack

One stack. Several layers.

Tools are only useful when the decisions are clear.

01

WEB3 & SMART CONTRACTS

Specializing in Solidity development, EVM behaviors, and protocol security auditing. Experienced with Foundry, decentralized oracle configurations, and optimization vectors for on-chain logic.

02

FULL-STACK & SYSTEMS

Proficient in developing scalable full-stack web applications and cross-platform mobile apps using React, Next.js, Express, Node.js, TypeScript, and Flutter. Experienced with RESTful APIs, relational databases, containerization via Docker, and production backend architectures.

06 / Contact
Open for Web3, Protocol & Systems Engineering Roles

Bring a
hard problem.

Available for protocol engineering, smart contract security, and backend systems work. If the problem has real constraints, I want to hear about it.

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sudheerkondamuri2@gmail.com