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PayBridge, Bengaluru

• Rebuilt the payment status service in Java and Spring Boot, cutting p95 latency from 820 ms to 510 ms for 2 million monthly users.
• Led the move of 14 cron jobs to Kafka consumers, ending the nightly batch failures that delayed settlements.
• Designed idempotent retry handling for UPI callbacks, which brought duplicate refunds down to zero.
• Mentor 3 junior engineers and run the team's weekly code review rota.

Cartwise, Bengaluru

• Built the order history API in Python and FastAPI, used by 400,000 monthly shoppers.
• Added PostgreSQL indexes and a Redis cache that halved database cost and page load time.
• Wrote the contract tests that caught 30+ breaking API changes before release.

Small library for token-bucket rate limiting with Redis, used in 3 internal services.

github.com/priyanair/rate-limit-kit

Lumen Home Appliances, Mumbai

• Own the online channel: paid search, marketplaces, email and the brand website, with a team of 6.
• Grew online revenue 4.7 times in three years while cost per order fell 31%.
• Launched 11 products, each with a 6-week plan agreed with sales and supply chain.
• Moved reporting from spreadsheets to a weekly Power BI dashboard used by the leadership team.

Saffron Foods, Mumbai

• Ran the ready-to-cook range across 3 states, worth Rs 85 crore a year.
• Moved 40% of the media budget to digital and held market share at 22% through a price war.
• Led the pack redesign that lifted shelf pick-up by 12% in store tests.

Northstar Bank, Pune

• Redesigned the personal loan application: completed applications rose from 21% to 44%.
• Built the app's design system of 120 components with the front-end team, cutting design-to-build time by a third.
• Run monthly usability tests with 8 to 10 customers and share the findings with product and engineering.
• Lead accessibility reviews; the app now meets WCAG 2.1 AA on every core flow.

Roamly Travel, Pune

• Designed the hotel booking flow and the trip planner, used by 1.2 million people a month.
• Simplified checkout from 5 steps to 3, lifting bookings by 9%.

A 40-point checklist for screen reader friendly banking apps, used by 3 Indian banks.

snehakapoor.design/checklist

Kriti Labs, Jaipur

• Built 6 React pages for a school admin portal and fixed 20+ bugs found after launch.

Order-ahead app for the college canteen, used by 600 students in its first month.

github.com/rahulverma/canteen

Basketly, Gurugram

• Built the weekly business review dashboard in Looker, used by 40 managers.
• Ran 25 A/B tests on checkout; the winning changes added 6% to conversion.
• Cut monthly reporting from 3 days to 4 hours with dbt models and scheduled checks.
• Built the customer churn model that marketing now uses to target win-back offers.

Fintrail, New Delhi

• Cleaned and joined 3 years of loan data and found the 4 factors behind most late payments.

Public dashboard of hourly AQI for 40 stations, 8,000 visits in its first month.

github.com/aishakhan/aqi

Deccan Life Sciences Ltd, Hyderabad

• Lead finance, tax, treasury and investor relations for a Rs 4,800 crore listed company, with a team of 45.
• Freed Rs 210 crore of working capital by renegotiating terms with 120 suppliers.
• Refinanced Rs 900 crore of debt, saving Rs 38 crore a year in interest.
• Closed the books in 5 days instead of 12 after moving to SAP S/4HANA.
• Present results to the board's audit committee every quarter.

Krishna Steel Industries, Hyderabad

• Built the monthly forecast and plant-level costing used to price 400 products.
• Led the finance side of a Rs 650 crore plant expansion, delivered on budget.
• Cut power cost per tonne by 14% through a captive solar plant business case.

Big Four audit firm, Hyderabad

• Audited manufacturing and pharma clients with revenue up to Rs 3,000 crore.

Zentrix Cloud, Chennai

• Led the platform team's move of 300 services to Kubernetes; deploy time fell from 45 to 6 minutes.
• Designed the internal developer portal used by 900 engineers to create, deploy and monitor services.
• Cut cloud spend by 22% (Rs 9 crore a year) with autoscaling and right-sizing.
• Wrote the incident review process now used across engineering; repeat incidents fell by half.
• Interview and mentor engineers; 4 mentees promoted.

Freshline SaaS, Chennai

• Built the event pipeline (Kafka, Go) handling 2 billion events a day.
• Owned on-call for billing; brought incidents down from 9 to 2 a month.
• Moved the team from manual releases to CI/CD with GitHub Actions.

Infosys, Chennai

• Built Java services for a US bank's payments platform.
• Automated regression tests, cutting the release cycle from 4 weeks to 2.

CLI that shows Kubernetes cost per team; 1,400 GitHub stars.

github.com/karthiks/kube-cost-report

"Moving 300 services to Kubernetes without a freeze", a 30-minute talk.