Full-Stack Developer · Senior · 10+ yrs

Rohan Iyer

Principal Engineer / Engineering Lead

Hyderabad, India rohan.iyer@proton.me +91 90000 58217 linkedin.com/in/rohan-iyer-eng github.com/rohaniyer

Professional summary

Engineering leader and full-stack architect with 12 years building web platforms at scale. Sets technical direction across React/Next.js front ends and Node.js/PostgreSQL services, leads teams of 10–18 engineers, and ties architecture decisions to business outcomes — uptime, cost and revenue. Hired and grew teams, drove platform consolidation saving crores annually, and mentors engineers into senior and staff roles.

1.2M

Daily users on the platform

₹2.1Cr

Annual infra cost cut

Engineers led

Skills

Leadership

Tech strategy & roadmapTeam building (10–18)Hiring & mentoringStakeholder alignmentArchitecture review

Architecture

Distributed systemsEvent-driven (Kafka)MicroservicesMulti-regionDomain-driven design

Stack

TypeScriptReactNext.jsNode.jsGraphQLPostgreSQLRedisGo

Platform

AWSKubernetesTerraformCI/CDObservability (Datadog, OpenTelemetry)

Work experience

Principal Engineer & Platform Lead · Northwind Commerce

Apr 2019 – Present

Hyderabad

Lead a 16-engineer platform org powering a storefront serving 1.2M daily users and peaks of 9,000 requests/second during sale events.
Architected a Next.js + Node/GraphQL migration off a legacy monolith, lifting checkout conversion 14% and cutting p99 latency 46%.
Consolidated 3 overlapping services and re-platformed onto Kubernetes, reducing infrastructure cost ~₹2.1 crore/year.
Set the engineering roadmap with product and the CTO; defined the SLO program that took availability from 99.5% to 99.95%.
Hired 11 engineers and grew 4 into senior/staff roles; established the architecture-review and on-call practices used company-wide.

Engineering Manager / Tech Lead · Cumulus Health

Jun 2015 – Mar 2019

Bengaluru

Led a team of 8 building a patient portal (React/Node/PostgreSQL) adopted by 30+ hospitals; scaled it to 400k patients.
Introduced CI/CD, automated testing and feature flags, cutting release incidents 60% and enabling weekly releases.

Senior Software Engineer · Earlier roles — Infosys, Zeta

2013 – 2015

India

Built JavaScript/Node services and React UIs across banking and payments products; promoted twice for delivery and technical leadership.

Education

B.Tech Computer Science

2013

National Institute of Technology (NIT) Warangal, Warangal

Certifications

AWS Certified Solutions Architect – Professional

Amazon Web Services · 2021

Certified Kubernetes Administrator (CKA)

CNCF · 2020

Selected achievements

Cut infrastructure cost ~₹2.1 crore/year via service consolidation and Kubernetes re-platforming.

Raised platform availability from 99.5% to 99.95% by introducing an SLO + error-budget program.

Speaker, Rootconf 2023 — "Surviving 9,000 RPS sale traffic on a budget."

Mentor at a women-in-tech engineering fellowship; advises 2 early-stage startups on architecture.

See the work in 3D

Explore Rohan's interactive WebGL portfolio — projects, skills and a way to get in touch.

Open the 3D portfolio