Hi, I'm Abhijeet.
I build software that holds up.
Software engineer at NPCI working across backend, mobile, security and cloud infrastructure. I've shipped post quantum cryptography, offline Digital Rupee payments, full stack products and AI powered DevOps tooling. Winner of RBI's Global Hackathon HaRBInger 2025.
Pune, India · Backend · Full Stack · Security · DevOps

RBI HaRBInger 2025
Global Hackathon Winner
Currently
SWE @ NPCI
- ₹45L
- HaRBInger 2025 prize
- 9.38
- CGPA at PICT
- 11K+
- Requests served, zero downtime
- 85%
- Latency cut via GCP + K8s
About
An engineer who enjoys hard problems across the stack.
I'm a final year Information Technology student at PICT, Pune, currently working as a Software Engineer at NPCI, the organization behind UPI. There I work on post quantum cryptography for mobile, offline CBDC wallets and UPI Lite.
I like problems where correctness really matters, where a double spend, a leaked key or a dropped transaction is never acceptable. That led my team to build an offline Digital Rupee wallet that won the Reserve Bank of India's Global Hackathon against national and international banks.
I enjoy working across the stack. I've built full stack products used by 1K+ people, an AI powered DevOps platform where agents analyze repos and ship to production, and I led the infrastructure for TechFiesta, scaling it to 11K+ requests with zero downtime.
Education
Pune Institute of Computer Technology
B.E. in Information Technology
CGPA
9.378
2023 to 2027
Security & Cryptography
Post quantum algorithms like ML-KEM and ML-DSA, white box key protection and zero knowledge proofs on mobile.
Backend & Payments
Transaction systems for UPI Lite and the Digital Rupee, plus full stack products built with Java, Node.js and Next.js.
Cloud, DevOps & AI
Kubernetes, Terraform and CI/CD pipelines, with AI agents that plan and run the work through MCP.
Experience
Where I've worked
National Payments Corporation of India (NPCI)
Software Engineer
NowJul 2026 to Present
Mumbai, India
- Developed mobile side infrastructure for Post Quantum Cryptography, enabling secure execution of ML-KEM, ML-DSA, SLH-DSA and WBSL-DSA under mobile resource constraints.
- Architected an Offline CBDC (Digital Rupee) solution for secure on device storage and transfer of value, with transaction validation, synchronization and double spend prevention.
- Contributed to UPI Lite and UPI LiteX: secure payment processing, offline and low connectivity transaction flows, and reliable reconciliation.
Scriptlanes
Full Stack Developer Intern
Jun 2025 to Apr 2026
Pune, India · Hybrid
- Built and deployed full stack features with Next.js, Prisma, PostgreSQL and Tailwind CSS, improving platform usability for 1K+ users.
- Implemented an OpenAI powered chatbot that boosted user engagement by 30% in beta testing.
- Led a 3 member Agile team to deliver chatbot features ahead of schedule.
TechFiesta, PICT
Tech Lead
International Hackathon
Pune, India
- Migrated the backend to GCP and containerized services with Kubernetes, cutting latency by 85%.
- Introduced Redis caching to reduce database hits and raise API throughput during peak traffic.
- Scaled infrastructure to reliably serve 11K+ requests with zero downtime across the event.
Selected work
Projects I'm proud of
From award winning payment systems to developer platforms, built to hold up in production. Click any diagram to explore it.
Transaction flow
Offline Digital Rupee Wallet · HaRBInger 2025
A-SPARSH
An offline CBDC wallet that lets two phones transfer Digital Rupee over Bluetooth with no internet at all, while keeping signing keys safe on ordinary phones that have no secure element.
- Phone to phone transfer over an encrypted BLE tunnel: QR handshake, AES-256-GCM transfer blocks and signed acknowledgements
- UTXO token ledger with double spend prevention using Merkle roots, nullifiers, Pedersen commitments and range proofs
- White box cryptography so private keys never sit in memory, with a shared Rust core for Android and iOS
₹45Lprize won
Private repo · demo on requestArchitecture
Trust Layer for Agentic Commerce
AgentKit
Lets any third party AI agent shop on a merchant's behalf while making it structurally impossible for that agent to move money on its own. It assumes the model is already compromised and bounds the worst case.
- Agents only propose. An isolated kernel with no model authorises, and only the executor holds payment credentials
- 19 rule policy engine covering mandates, scopes, caps, velocity and step up, with 26 stable reason codes
- Ed25519 signed intents over RFC 8785 canonical JSON, single use quotes and a hash chained, append only ledger
19policy checks
Private repo · demo on requestArchitecture
Cryptographic Inventory & Quantum Risk Engine
ECDAT
Finds every piece of cryptography across source code, binaries, certificates, server configs and live TLS endpoints, scores its quantum risk, and generates the migration code. Runs fully offline as a single 3.6 MB Rust binary.
- Five collectors (Java AST via tree-sitter, ELF/PE/Mach-O binaries, X.509, configs, TLS probing) merged into one CycloneDX 1.6 CBOM
- Probabilistic Mosca risk model and crypto agility scoring rank what to migrate first
- CI gate that fails builds on new weak crypto, plus generated migrations to ML-KEM-768 hybrid and ML-DSA-65
384offline tests
Private repo · demo on requestMore projects
AI Native DevOps Platform
DevOps Universe
70%
less setup time
A visual DevOps orchestration platform with a DAG based workflow engine and an agentic control plane that analyzes repos, generates IaC and ships to production on its own.
- 20+ integrated tools: GitHub, Docker, K8s, AWS, Terraform, Jenkins, ArgoCD
- MCP tool calling agents for workflow generation, provisioning and log diagnostics
- Event driven CI/CD with parallel DAGs, retries, rollbacks and live Socket.IO telemetry
Programmable Money Wallet
RupeeMind
8
spend safeguards
A wallet where money follows rules. Funds can be locked to a purpose, limited by time, merchant or category, and enforced on every single transaction.
- Rule engine with 8 independent spending safeguards
- Smart Vaults that lock funds for rent, fuel or food
- Voucher engine with category, merchant, location and expiry restrictions
AI Powered Safety Application
AlertMate
88%
safer routes
A women safety platform combining AI route planning, wearable vitals monitoring and off grid LoRa communication for emergencies where there's no network.
- Safer route engine using crime maps, medical density and time based risk
- Heart rate and SpO₂ anomaly detection with TensorFlow triggers automatic SOS
- LoRa alerts transmit up to 15 km in zones with no network
Toolbox
Technologies I work with
Languages
Backend & APIs
Frontend & Mobile
Databases
DevOps & Cloud
AI / ML
Recognition
Awards & hackathons
I compete regularly. It's the fastest way I know to ship under pressure and learn new domains.

Winner, RBI HaRBInger 2025
Beat national and international banks · ₹45 lakh prize
Bengaluru · 18 April 2026
PICT InC
1st PlaceInternational Project Exhibition & Competition
Won InC '24 and InC '25, plus 1st in Impetus at InC '26.
TIGC Hackathon
FinalistInternational
Awarded 300 AUD for AlertMate, a women safety platform.
Smart India Hackathon 2025
FinalistGovernment of India
National level finalist.
Techfest 2025
FinalistIIT Bombay
Finalist at Asia's largest science and tech festival.
i.mobilothon 5.0
FinalistVolkswagen
Built a parking prediction and booking system.
Contact
Let's build something that matters.
I'm open to software engineering roles across backend, full stack, security and platform engineering. My inbox is always open.