Atul Gupta

89M+ M365 subscribers reached · ~94% faster incident iteration · 0 hard-coded credentials

Equipped engineers across the platform — not just my team — with a tested, production-ready high-severity response capability.

Develop and ship features for Microsoft's Consumer Purchase & Subscriptions platform — the purchase, renewal, and billing flows behind Xbox Game Pass and Microsoft 365, reaching 89M+ Microsoft 365 consumer subscribers and Xbox's global gaming base.

• –Engineered, from the ground up, a PowerShell script-execution framework that hot-loads and instantly validates scripts across INT and production environments.
• –Secured the framework end-to-end with Managed Identity — eliminating hard-coded credentials and certificate-based auth entirely — in full compliance with Microsoft's Secure Future Initiative (SFI).
• –Replaced one-off C# solutions and the write-code → PR → build → test cycle with native bulk operations, cutting incident iteration time from a full day to under 30 minutes in outages that can affect millions within minutes.
• –Shape architecture for scalable, distributed services, using Kusto to drive telemetry-based diagnostics and operational insight.

Case study: deleting the feedback loop (~94% faster incident response) →

C# · Azure · PowerShell · REST APIs · Kusto

Co-designed the next-generation payment architecture behind the phased rollout across Target store locations.

Built backend services (Spring Boot, Spring Core, Spring MVC, JDBC Template) powering real-time payment authorization for a phased rollout across Target store locations.

• –Developed gRPC services letting point-of-sale devices interact and synchronize state in real time across the phased deployment.
• –Co-designed a distributed, scalable microservices architecture for next-generation payment processing.
• –Automated infrastructure provisioning with Chef cookbooks in Ruby, and expanded automated test coverage to strengthen the authorization pipeline.

Java · Spring Boot · gRPC · Chef · Ruby

<5 min per rate import, from hours · 1000s precision imports daily

Grew the team — mentored and onboarded new engineers and interns while owning the platform's core algorithm as primary developer.

Advanced from R&D intern to Senior Full-Stack Engineer on the pricing engine, digitizing core mortgage pricing workflows for faster, more accurate loan-pricing decisions.

• –Led development, as primary developer, of a proprietary rate-detection algorithm that auto-identified incoming file types (Excel, PDF, Word, text) and discovered table structures — bordered or borderless — mapping data fields to headers with no manual configuration.
• –Cut manual rate imports from hours to under 5 minutes per file, letting the platform reliably process thousands of precision imports daily, including automatic detection of rate changes across file versions.
• –Architected a modular, multi-tenant platform; integrated Apache Kafka for real-time ingestion and Docker to isolate customer code execution.
• –Connected the platform with one of the largest U.S. loan servicers; prototyped an ML/OCR pipeline (Tesseract, OpenCV) for PDF table recognition and mentored new engineers and interns.

Java · Spring · Angular · Kafka · Docker · OpenCV

$1.13M client savings · -30% customer support calls · +25% module efficiency

Directed technical-specification review for a U.S. oil major; senior developer on Infosys' Best Project in the Energy vertical.

Owned requirement elicitation, design documentation, and architecture across the full software development lifecycle for energy-sector clients — refactoring legacy systems and automating deployment.

• –Senior developer on a Production Optimization Toolkit (UK oil major) integrating third-party simulators (Petex GAP, AspenTech HYSYS) — named Infosys' Best Project in the Energy vertical and driving $1.13M in client savings through reduced cycle time.
• –Directed technical-specification review for critical oil-well construction equipment (U.S. oil major), reducing HSE and business risk.
• –Refactored legacy code for 25%+ gains in module efficiency; authored QA and test plans that cut customer support calls by 30%.

Petex GAP · AspenTech HYSYS

OTELOG ↗ 2026

Self-hosted, privacy-first vehicle telemetry

Kotlin · Spring Boot 3 · gRPC · TimescaleDB · Next.js

TeslaSync ↗ 2026

Self-hosted Tesla fleet intelligence with Helix AI

Go 1.25 · React 18 · TimescaleDB · pgvector · Redis 7

VitaSync ↗ 2026

Self-hosted wearable health data, one API

TypeScript · Fastify 5 · Next.js 16 · Drizzle · PostgreSQL

EchoStats ↗ 2026

Self-hosted Spotify analytics — 40+ dashboards

Python · FastAPI · React · PostgreSQL · Redis