I'm Sameer Kumar — a Senior Backend Engineer with 9+ years scaling distributed platforms in production. Currently at Atlassian, where I took Jira Service Management from 10K → 60K agents and lifted SLA from 99.9% → 99.99%.
Outcomes from real production systems — capacity, reliability, and revenue impact.
Platform scale
0×
Took JSM agent capacity from 10K → 60K at Atlassian.
Availability
0.00%
Lifted SLA from 99.9% → 99.99% on tier-1 services.
Years building
0+
Distributed backends in high-traffic production.
ARR generated
$0M
Compressed approval cycle 1 month → 4 days at Bizongo.
A timeline of teams, scale, and the problems I've owned end-to-end.
Bengaluru
Scaling Jira Service Management — distributed systems, capacity engineering, platform migration.
Bengaluru
Platformized booking — multi-team scalable usage and BizApp adoption from 10% → 70%.
Mumbai
Built core platform services — auth, GDPR readiness, artwork approval pipeline ($1M ARR).
Gurugram
Warehouse robotics — TCP/UDP communication, remote diagnostics for fleet operations.
Polyglot by necessity, JVM-first by preference. Strong opinions, loosely held.
JVM-first, polyglot when it matters.
Right tool, right workload.
Cloud-native, IaC, async by default.
If you can't see it, you can't fix it.
Five pillars that shape every design review, every PR comment, every on-call hour.
Design for the next order of magnitude — capacity models, sharding, async patterns.
SLOs over vibes. Error budgets, graceful degradation, failure-first design.
Consistency you can reason about — events, sagas, ordering guarantees, exactly-once enough.
Calm under pressure. Runbooks, automation, post-incident learning.
Metrics, traces, and logs as a product surface for the on-call.
A portfolio of backend and platform projects from Atlassian, Instawork, Bizongo, and GreyOrange.
Scaled Jira Service Management from 10K to 60K agents.
Identified and removed distributed-system bottlenecks across critical service paths, enabling 6x capacity growth while protecting reliability and latency.
Improved platform availability from 99.9% to 99.99%.
Built reliability guardrails, incident automation, and database remediations that significantly reduced operational risk in high-traffic production environments.
Migrated production AWS workloads to Atlassian internal platform.
Led migration planning and execution with a focus on reliability and scalability, reducing platform fragility while preserving service behavior.
Migrated booking service for scalable multi-team usage.
Restructured service boundaries and integrations to support faster iteration and safer ownership handoffs across teams.
Revamped Business App workflows to drive adoption.
Redesigned backend flows and reliability pathways for the business application, making day-to-day operations faster and easier for teams.
Cut approval cycle from one month to four days per artwork.
Built and scaled a workflow platform that compressed approval timelines and improved commercial throughput for packaging operations.
Built centralized user/auth platform across products.
Implemented shared authentication and user management capabilities that enabled GDPR readiness and accelerated product launches.
Built low-latency communication stack for warehouse bots.
Designed device communication and remote diagnosis capabilities for warehouse automation, reducing travel overhead and improving field support speed.
A lifelong love for systems also extends to cultures, cities, and good food. Each pin is a story.
9 countries · click a pin to focus a card
A few placeholder quotes — to be replaced with real attributed testimonials.
Sameer treats reliability like a product. The capacity work he led didn't just unblock growth — it changed how the team reasons about scale.
One of those rare engineers who can hold a system in their head end-to-end and still ship clean abstractions everyone else can build on.
Calm in incidents, opinionated in design reviews, generous in code reviews. Exactly the senior you want on a tier-1 service.
Reach out about Senior / Staff Backend or Platform Engineering roles, advisory work, or interesting systems problems.
Email is fastest. I read every message and reply within 48 hours.