Blockchain & Backend EngineerOpen to Full-Time Roles · Smart Contracts · Backend Systems · DeFi
2.5+ years building on-chain systems and backend infrastructure — DeFi protocols, smart contracts, and API layers. Previously at Aarna Protocol: liquid restaking vaults, Lido / Ankr / EigenLayer integrations. Frontend when needed, backend and blockchain by default.
Working with MashLabs on an advanced NFT marketplace — smart contract architecture, backend integrations, and on-chain protocol design.
Full-time roles in blockchain engineering or backend systems — smart contracts, DeFi infrastructure, or Web3 backend APIs. Open to AI-integrated product teams. India or remote internationally.
Immediately. No notice period.
Odisha, India · Open to relocation or fully remote.
What I bring to a team
What I Bring to a Team
Engineers who own the system end to end — on-chain logic, backend API layer, and enough frontend to ship without blockers.
Most engineers wait to be assigned tasks before moving.
I own problems end to end — from system design to production deployment — without waiting to be told what to do next.
Smart contract bugs are expensive and hard to catch post-deployment.
I write audited, gas-optimized Solidity with comprehensive Foundry test suites — correctness is non-negotiable before I ship.
Backend and mobile are usually two separate hires with coordination overhead.
I architect NestJS/PostgreSQL backends and ship Expo mobile apps in the same sprint — one engineer, zero silos.
Integration blockers kill timelines when no one owns the ambiguity.
I dig into undocumented specs, coordinate with external teams, and unblock myself — I've cut integration timelines by 30%.
Work Experience
Blockchain & Backend Engineering Experience
2.5+ years in on-chain systems, backend infrastructure, and Web3 integrations — with frontend as a supporting layer.
Freelance Software Developer
Self-Employed
- Designed and deployed custom Solidity smart contracts covering staking mechanisms, ERC-20 token systems, and NFT collections — managing the full lifecycle from development through testnet deployment.
- Built Web3 backend services integrating on-chain contract interactions with off-chain APIs using Node.js, TypeScript, and Ethers.js.
- Developed an AI chat agent with a RAG pipeline for a client platform, integrating LLM inference with a queued backend architecture using Express, Redis, and BullMQ.
- Handled full contract lifecycle management: writing, testing with Hardhat, deploying to testnets, and coordinating ABI integration with frontend and backend layers.
Solidity · Hardhat · Ethers.js · Node.js · TypeScript · PostgreSQL · OpenAI API · Redis · BullMQ
Aarna Protocol
Software Development Engineer
- Studied and extended the existing AFI801/AFI802 vault architecture to design AFI407 — a liquid staking vault that aggregates LST deposits across Lido, Ankr, and EigenLayer to generate additional yield.
- Contributed to reward computation logic and debugged complex calculation issues in the staking distribution engine during active MVP development across 3 integrated restaking protocols.
- Designed and built scalable off-chain APIs enabling reward computation and on-chain settlement, supporting 5,000+ processed transactions through the system.
- Collaborated directly with external protocol engineering teams to reverse-engineer undocumented contract specifications, unblocking integration work.
- Mentored 2 interns on system architecture, on-chain/off-chain integration patterns, and debugging practices.
Solidity · Hardhat · Ethers.js · Node.js · TypeScript · PostgreSQL · REST APIs · Docker · GitHub Actions
SubLabs
Freelance Software Developer
- Owned backend development using Node.js, TypeScript, and REST APIs — integrating on-chain data with off-chain analytics and frontend dashboards.
- Assisted in smart contract development alongside the core contract developer, contributing to business logic and integration layer design.
- Redesigned a pricing computation module using a tick-based concentrated-range architecture (Uniswap V3-style), improving batch processing efficiency for on-chain data aggregation.
- Refactored core computation modules using scalable architectural patterns, reducing deployment failures and production incidents.
Node.js · TypeScript · React · Next.js · Solidity · REST APIs
BSBS Tech Pvt. Ltd.
Software Developer
- Built a P2P on-chain transaction system — designed the smart contract logic and REST API layer handling transaction lifecycle management end to end.
- Developed a token voucher application on Ethereum/Polygon using Solidity, managing voucher issuance, redemption, and validation logic in contract and backend.
- Delivered a referral workflow platform with full tracking logic in Node.js/TypeScript and React/Next.js frontend integration.
- Reduced production regressions through structured code reviews, debugging, and incremental testing across all three systems.
Solidity · Node.js · TypeScript · React · Next.js · Ethereum · Polygon · Redis
NFThing
Software Developer Intern
- Designed and implemented a custom internal API using NFTPort to aggregate metadata and analytics across 2,000+ ERC-721 assets — replacing a manual tracking process entirely.
- Integrated NFT analytics into frontend dashboards, enabling real-time monitoring of collection performance, sales data, and metadata quality.
- Strengthened system reliability through testing, code reviews, and clean architecture practices.
Node.js · React · Solidity · NFTPort API · ERC-721 · Ethereum
Featured projects
Blockchain & Backend Engineering — Case Studies
6 production systems built with quantified speed, security, and integration outcomes.
Problem
Analytics dashboards suffered from thread-blocking SQL operations, driving latency to 5–8s and triggering a 34% creator churn.
Action
Migrated event aggregations to a Redis cache + BullMQ pipeline, running Prisma query tuning in dedicated thread workers.
Result
Dashboard load times dropped to 1–2s. Creator activation rates recovered 48%, satisfying VC due diligence requirements.
MashLabs — ERC721 NFT Protocol: Optimized Smart Contract Compilation
Problem
Creators were blocked by extreme standard contract minting gas costs exceeding $80 per session, lowering public launch conversions by 50%.
Action
Architected customized ERC-721A batch minting contracts with memory gas optimization sweeps, audited under flash-loan test specs.
Result
Gas consumption cut by 35%. Public minting sold out — 0 smart contract bug reports filed post-audit.
Problem
Customer support latency averaged 5–8s on standard LLM inference APIs, driving user complaints and operational support overhead.
Action
Developed a Next.js RAG bot using Cerebras AI low-latency engines and streaming Server-Sent Events (SSE) with Redis vector cache.
Result
Reduced conversation latency by 60% (down to 1–2s). Resolved 74% of tickets autonomously, cutting support overhead by 40%.
Problem
Stock synchronization delays between logistics centers and purchasers took up to 10 mins, triggering duplicate orders.
Action
Built real-time PostgreSQL replication triggers on Supabase, securing transactional fields using RLS rules.
Result
Sync latency dropped below 150ms, resolving double-orders. Shipped prototype in under 6 weeks, cutting handoff by 40%.
On-Chain Credit Score — Solidity DeFi: 100% Secure Audited Scoring
Problem
DeFi lending lacked robust on-chain credit risk parameters, preventing collateral-efficient pools and capital scaling.
Action
Designed credit rating Solidity engines audited with extensive Foundry fuzz testing and flash-loan execution logs.
Result
Achieved 100% audit pass rate on Foundry fuzz + flash-loan test suite. Protocol deployed on Ethereum Sepolia with 0 security default events.
FluidPass — Superfluid Polygon: 30% Integration Resolution Saved
Problem
Standard token subscriptions required active monthly approvals, triggering high network fees and a 26% user churn.
Action
Integrated Superfluid real-time token streaming with standard Solidity contract wrappers deployed on Polygon.
Result
Eliminated subscription approvals, cutting billing user churn. Speeded integration resolution times by 30%.
How I work
My Engineering Process — From Discovery to Production Deployment
Predictability is a feature. You'll never wonder what's happening or when to expect results.
Discovery & User Research
We aggregate startup metrics, UX user constraints, and user research frameworks before writing code. I ask the hard business questions that surface real requirements.
UX Strategy & Wireframing
We model precise UX wireframes, layouts, and system pathways to map out data flows and clear user navigation profiles before frontend design begins.
UI Design & Prototyping
I design high-fidelity components and interactive prototypes in Figma, establishing clean UI systems that match the aesthetic of top SaaS and DeFi products.
Testing & Handoff
Every protocol is secured with extensive automated Hardhat/Foundry solidity testing and comprehensive backend integration checks, creating a 100% developer handoff package.
Technical Pile
My Technical Stack & Tooling.
Primary depth in on-chain systems and backend infrastructure. Frontend and mobile as needed.
Education & Certifications
IMIT Cuttack
CGPA 9.18 / 10
Cyfrin Updraft
Security · Audit patterns · Fuzzing
Alchemy University
Wallets · Tailwind CSS · Web3 fundamentals
Let's connect
Open to Full-Time Engineering Roles
Looking for a full-time role in blockchain engineering, backend systems, or AI-integrated product teams — India or remote internationally. Drop me a message or book a quick call.
"Ashish completely re-engineered our gas-optimized NFT minting contracts. His custom smart contract integration and test suites saved our collectors 35% in gas fees, achieving 100% security correctness."
— Founder, MashLabs"His NestJS backend optimization cut our API latency by 60%, scaling transaction throughput to 100+ concurrent events. An elite, autonomous full-stack developer."
— CTO, StudioLive SaaS