Senior Software Engineer · Backend & Distributed Systems

I build backend systems
that hold up under pressure.

7 years building high-scale backend systems across Fintech, Quick Commerce, and B2B SaaS, specializing in distributed systems and GenAI workflows.

Python (Django) Golang Java AWS Postgres Distributed Systems GenAI Workflows

Fintech  ·  Infrastructure  ·  B2B SaaS

Lovlin Thakkar - Senior Software Engineer, Backend Engineer, Python and Golang specialist

Experience

Senior Software Engineer ·
HeyMarvin AI (Equafin Corp)
  • Architected a data archival system that unblocked sales for 10+ enterprise customers and ensured data sovereignty compliance across 30+ organizations.
  • Shipped a Survey PII processing engine that directly secured 5 enterprise contracts.
  • Built a feature-flag and plan-control system enabling granular tier-based access and self-serve monetization.
  • Led design reviews and mentored junior engineers, cutting onboarding time by 30% while raising the bar on code quality.
  • Partnered with Product to translate complex compliance requirements into phased technical roadmaps.
Software Engineer II ·
Swiggy · Instamart / Insanely Good / SuprDaily
  • Re-architected capacity management to Slot-level granularity in 7 days, shrinking expansion lead time from 4 weeks to 1 week ahead of a high-visibility marketing launch.
  • Delivered Real-time Demand Shaping v2 - cut peak-traffic order failures by ~1% (absolute), recovering ~$1k+ GMV per day.
  • Led backend engineering for the InsanelyGood pivot, designing high-availability presentation-layer services to support a major product transition.
  • Orchestrated end-to-end integration of delivery tracking during a high-stakes migration into the primary Swiggy ecosystem.

Instamart was preparing a major marketing launch and needed to expand into new dark store slots within a week. The existing capacity system managed availability at the zone level - too coarse to allocate individual delivery slots without overcommitting. I re-architected the system to track capacity at the slot level in 7 days flat, cutting expansion lead time from 4 weeks to 1 week and letting the launch proceed on schedule without order failures.

Associate & Analyst (SE 2 / SE 1) ·
Goldman Sachs
  • Re-engineered Trade Allocation workflows to handle 10× the throughput while cutting infrastructure costs by 80%.
  • Built a Trade Position Open-Close calculator preventing $10,000+ in projected monthly losses.
  • Deployed Kong API Gateway for the Advisor Portal, centralizing auth, rate-limiting, and traffic routing.
  • Automated regression testing for Derivatives Exchange Connectivity, cutting release cycles from 8 hours to 2 hours.
  • Optimized high-throughput Kafka processors handling real-time trade data streams over the FIX Protocol.

Things I've built

01
Tokamak Trajectory Planning
Robotic arm simulation using Actor-Critic RL for nuclear fusion research - optimizing magnetic coil trajectories for plasma containment in a Tokamak reactor.
Actor-Critic RL Python Simulation
02
Gaming AI Agent
Deep Q-Network (DQN) agent reaching human-level play on simple mobile games. Built to understand how reward shaping affects convergence speed in sparse-reward environments.
Python DQN Reinforcement Learning
03
Price Tracker
High-concurrency scraping service built with Node.js and MongoDB. Monitors prices across 5+ e-commerce platforms and fires alerts when thresholds are crossed.
Node.js MongoDB Scraping

Say hello.

I'm drawn to backend-heavy work in fintech, infrastructure, or early-stage startups where the technical problems are genuinely hard. Drop me a line.