Hi, I'm
Sajal Mishra.
Backend Engineer · APIs · Distributed Systems
Senior Software Developer. I design and build scalable systems and APIs — from platforms serving 1M+ users to automation workflows powering business-critical operations.
About
I'm a software developer with 4+ years of experience designing and building production-grade APIs, distributed systems, and full-stack web applications. Currently at Veramatic, architecting automation workflows that handle complex data onboarding for dealership accounting processes.
At Rigi, I led platform engineering for an LMS serving 1M+ learners — building payment pipelines, certificate issuance systems, coupon services, and a video streaming infrastructure with custom player integration. I also built GapUp, a financial advisory platform that drove a 50%+ revenue increase.
I care about how things work under the hood. Outside of web development, I've built a C++ MongoDB driver wrapper and an HTTP web framework from scratch — which keeps my understanding of networking, memory management, and system design grounded.
Experience
Veramatic
Remote
Senior Software Developer
April 2025 – Present
- ▹Designing and building scalable automation workflows for complex data onboarding pipelines, improving system reliability and throughput for dealership accounting processes.
Rigi
Bengaluru, Karnataka, India · On-site
Senior Software Developer
Oct 2023 – Mar 2025 · 1 yr 6 mos
- ▹Architected the LMS platform's core services — cohort management, drip-content delivery, parallel video upload pipelines, and lesson ordering — enabling 500+ cohort launches by creators.
- ▹Built the certificate issuance system, installment payment logic, and affiliate reward engine powering the creator monetisation layer for 1M+ users.
- ▹Designed and integrated a video streaming infrastructure using MPD and M3U8 manifest formats, with multi-language subtitle support and dynamic bitrate selection, reducing playback errors by 98.
- ▹Developed cohort purchase flows and the content access platform (progress tracking, quizzes, assignments, commenting), serving 50+ edtech creators including GrowDataSkills, AlgoPrep, and PowerOfStocks.
Software Developer
Feb 2023 – Oct 2023 · 9 mos
- ▹Built GapUp from scratch — a platform for SEBI-registered advisors covering service discovery, advisory purchases, and referral tracking — driving a %%50%+ revenue increase%%.
- ▹Extended the coupon service to support platform-level discounts, reworked payment logic to handle platform cuts across all offerings, and implemented an affiliate tracking system for GapUp.
- ▹Integrated Razorpay for payment processing, Amplitude for event instrumentation, and built the referral and acquisition pipeline end to end.
GoBOLT
Gurugram
SDE 1 – Fullstack
Jan 2022 – Feb 2023
- ▹Architected a 3PL analytics dashboard from scratch — data ingestion, aggregation, and visualisation — giving leadership real-time visibility into logistics KPIs.
- ▹Redesigned PO and SOB bulk processing into a distributed batch pipeline using Azure Orchestrator, significantly reducing order processing latency.
- ▹Built core TMS services: carrier selection logic, shipment tracking, freight optimisation, and WMS/ERP integration.
Luxolis (LuxPM)
Delhi
Software Development Engineer
May 2021 – Jan 2022
- ▹Full-stack developer for a yoga instructor booking platform, handling frontend and backend development including user authentication and booking management.
- ▹Integrated payment systems and optimized user experience for seamless booking flow.
Systems I've Built
Production systems I've designed and owned — each shipped, scaled, and running.
LMS Platform
Rigi
Oct 2023 – Mar 2025
1M+ learners · 500+ cohort launches
Course management platform with cohort delivery, drip content scheduling, progress tracking, quizzes, and assignments.
Key challenge: Parallel video upload pipeline with real-time progress events and drip-content scheduling across thousands of active cohorts.
Outcome: Enabled 50+ edtech creators including GrowDataSkills, AlgoPrep, and PowerOfStocks.
Video Streaming Infrastructure
Rigi
Oct 2023 – Mar 2025
98% reduction in playback errors
Adaptive bitrate video delivery using HLS and DASH, with multi-language subtitle support and dynamic quality selection.
Key challenge: Generating MPD/M3U8 manifests per video, injecting subtitle tracks for multiple languages, and ensuring encoding reliability at scale.
Outcome: Reduced playback errors by 98% and enabled seamless adaptive streaming across all creator content.
Payment Orchestration System
Rigi
Feb 2023 – Mar 2025
Platform-wide · 1M+ user base
Payment processing layer covering installment plans, platform-cut splits, coupon discounts, affiliate commissions, and certificate issuance.
Key challenge: Coordinating installment schedules, platform split logic, and affiliate reward allocation across multiple concurrent payment flows without double-processing.
Outcome: Foundation for 50%+ revenue increase via GapUp; powered full creator monetisation layer.
Data Onboarding Pipeline
Veramatic
Apr 2025 – Present
Multi-source · business-critical reliability
Automation workflows that ingest, validate, transform, and load complex dealership accounting data into downstream systems.
Key challenge: Handling heterogeneous source formats with strict validation, partial failure recovery, and auditability requirements.
Logistics Batch Processing Pipeline
GoBOLT
Jan 2022 – Feb 2023
3PL operations · significant latency reduction
Distributed batch pipeline for processing purchase orders and shipment onboarding, replacing a synchronous bulk-upload flow.
Key challenge: Redesigning synchronous PO/SOB bulk processing into an async distributed pipeline with real-time status reporting for operations leadership.
Outcome: Significantly reduced order processing latency and gave leadership real-time visibility into logistics KPIs.
Skills
Backend & APIs
Frontend Systems
Languages
Databases
Infrastructure & Cloud
Observability
Currently Exploring