Odisha, India • Software Development Engineer

Hi, I'm Ashish Kumar Sahoo. I build secure smart contracts and scalable Web2 and Web3 apps.

I am specialized in Smart Contract Development, DeFi, and Full Stack App Development. Previously at Aarna Protocol, SubLabs, BSBSTech and NFThing.

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Solidity • Next.js • TypeScript • Node • Ethers.js • Wagmi • Hardhat • Foundry • MongoDB

About

Solidity, dApps, and cloud‑first backends

I'm Ashish Kumar Sahoo — a Software Developer from Odisha, India with 2.5+ years of experience building secure, scalable, and production-ready applications. Experienced in full-stack development using React/Next.js and Node.js, with strong expertise in designing reliable backend systems and complex integrations. Proven ability to optimize performance and deliver robust, industry-standard solutions.

Experience

Impact across DeFi and SaaS

Software Development Engineer-1

Aarna Protocol • Nov 2023 – Aug 2024

  • Led end-to-end development of a distributed staking and reward-calculation platform, owning system design, API development, external integrations, and core product architecture—improving overall system reliability by 40%.
  • Diagnosed and resolved critical computation and allocation bugs that caused incorrect reward distribution, implementing accurate calculation pipelines and improving correctness and consistency by 50%+.
  • Coordinated with external engineering teams to obtain undocumented technical specifications, accelerating integration timelines by 30% and reducing blockers during development.
  • Mentored and guided interns on system logic, debugging workflows, and code quality standards, increasing team productivity and development velocity by 25%.

Software Developer (Freelance)

SubLabs • Jul 2023 – Dec 2023

  • Built and maintained full-stack features for financial and analytics platforms, owning backend services, frontend components, and API integrations using Node.js, TypeScript, React, and Next.js.
  • Refactored core computation and business-logic modules using scalable architectural patterns, reducing deployment failures and production issues by 20%.
  • Applied performance-oriented system design principles inspired by Uniswap V3–style architectures, improving data processing throughput by 25%.

Software Developer (Web3 Developer)

BSBSTech Pvt. Ltd. • Mar 2023 – Jul 2023

  • Developed multiple end-to-end products including a P2P transaction platform, referral management system, and token voucher application, owning frontend, backend services, and integration logic based on client requirements.
  • Designed and implemented core business logic for transaction processing, user referrals, and voucher lifecycle management using Node.js and TypeScript, improving feature reliability and correctness by 30%.
  • Built responsive user interfaces and integrated APIs using React and Next.js, improving application responsiveness and overall user experience by 25%.
  • Improved system stability through structured debugging, code reviews, and incremental testing practices, reducing production issues and regressions by 20%.

Software Developer Intern

NFThing • May 2022 – Nov 2022

  • Built full-stack components for NFT-based and data-driven applications, focusing on clean architecture, maintainability, and performance while working extensively with the ERC-721 standard.
  • Designed and implemented a custom internal API using NFTPort to aggregate NFT metadata and analytics, enabling seamless consumption by frontend applications.
  • Integrated the NFT analytics API into the frontend to visualize key NFT metrics, improving data accessibility and presentation by 40%.

Projects

Selected work

Onchain Credit Score System

Solidity contracts + Node backend to compute credit scores from on‑chain data; REST API updates scores after 21 days; Sepolia deployment.

SolidityNode.jsEthers.jsTatum SDKSepolia
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DeWork — Decentralized HR & Payroll

HR system with token incentives, secure employee data on Ethereum, IPFS storage, and a Next.js Web3 frontend.

Next.jsEthers.jsIPFSSolidity
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Decentralized Research Paper Vault (DRPV)

Licensing platform for academic papers using Solidity and IPFS; compensates authors on purchase with a crypto flow.

SolidityIPFSNext.js
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FluidPass — Dynamic Event Payments (MetaSchool Winner)

Event payment system using Superfluid for real‑time streaming on Polygon; responsive Next.js UI.

SuperfluidPolygonNext.jsEthers.js
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Tech

Tools I use to ship

Solidity

Smart Contracts

Hardhat / Foundry

Tooling

web3.js / ethers.js / wagmi

On‑chain

Next.js / React

Frontend

TypeScript / JavaScript

Language

Node.js / Express

Backend

MongoDB

Data

Ethereum / BNB / Polygon / Arbitrum

Chains

Git / RemixIDE

Tools

Bootstrap / Tailwind

UI

Write to me

Let's build something on‑chain