Sumit Kumar
Results-driven Engineering Leader with 14+ years of experience in Mobile and Web application development, along with expertise in Python+Django, Devops, AWS, and backend services.
Over 5+ years of experience managing engineering teams, building high-performing teams, and optimizing processes. Skilled in strategic planning, cross-functional collaboration, and translating technical concepts into business value. Proven ability to lead digital transformation initiatives and align technology roadmaps with organizational goals.
- Role
Senior Engineering Manager
- Years of Experience
21.75 years
- Professional Portfolio
View here
Skillsets
- LLMs
- API Design
- automation
- Azure
- Backend
- CMP
- cost optimization
- Distributed Systems
- Docker
- ELK
- Event-driven
- Grafana
- KMP
- agentic systems
- Microservices
- mobile
- Observability
- rag
- Reliability Engineering
- Salesforce
- SDK
- Sentry
- Sitecore
- Vector DBs
- web
- Confluence
- Android - 3 Years
- Flutter - 1 Years
- AWS - 4 Years
- Django - 3 Years
- CI/CD
- Kafka
- Kotlin
- Node.js
- Swift
- TypeScript
- Vue.js
- iOS - 10 Years
- CSS
- Fastify
- Firebase
- HTML
- Jira
- Kinesis
- MongoDB
- PostgreSQL
- Python
- Redis
- Supabase
Professional Summary
21.75Years
- Sep, 2024 - Present1 yr 7 months
Senior Engineering Manager
American Express - May, 2023 - Aug, 20241 yr 3 months
Engineering Manager
Twin Health - Jun, 2022 - Feb, 2023 8 months
Software Engineering Manager
Twilio - May, 2015 - Aug, 20172 yr 3 months
Technology Consultant
Deloitte - Aug, 2017 - Jun, 20213 yr 10 months
Senior Technical Consultant
Deloitte - Apr, 2021 - Jun, 20221 yr 2 months
Specialist Master(Architect) / Engineering Manager
Deloitte - Dec, 2013 - Apr, 20151 yr 4 months
Senior iOS Developer
Cognizant - Jul, 2010 - May, 20154 yr 10 months
Senior Engineer
Cognizant - Jul, 2010 - May, 20154 yr 10 months
Senior Engineer
Infosys
Applications & Tools Known
Git
Javascript
REST API
Python
PostgreSQL
Slack
Jira
Figma
Visual Studio Code
Postman
Airtable
Microsoft Teams
Android Studio
Xcode
IntelliJ IDEA
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Confluence
Work History
21.75Years
Senior Engineering Manager
American ExpressSep, 2024 - Present1 yr 7 months
Led scalable credit platform across 5+ markets (40M+ users), driving performance improvements and ~20% revenue growth. Enhanced reliability through observability, release governance, and production stability initiatives. Influenced engineering roadmap and platform standardization in partnership with senior leadership to support long-term scalability.
Engineering Manager
Twin HealthMay, 2023 - Aug, 20241 yr 3 months
Spearheaded AI-enabled healthcare platform across mobile and backend systems. Reduced costs by 75% and improved conversions by 22% through optimization. Directed & mentored 20+ engineers across fullstack teams. Partnered with CTO/CPO to drive OKRs, platform standardization, accessibility, and global expansion strategy.
Software Engineering Manager
TwilioJun, 2022 - Feb, 2023 8 months
Scaled Authy 2FA platform to 10M+ users and Conversations SDK for 20+ clients while growing team 415 engineers. Built real-time infrastructure using Kafka, Kinesis, and WebSockets. Enhanced A/B testing and experimentation.
Specialist Master(Architect) / Engineering Manager
DeloitteApr, 2021 - Jun, 20221 yr 2 months
Senior Technical Consultant
DeloitteAug, 2017 - Jun, 20213 yr 10 months
Technology Consultant
DeloitteMay, 2015 - Aug, 20172 yr 3 months
Managed architecture and delivery of 8+ B2C/B2B full-stack applications across consumer and enterprise domains. Boosted engineering productivity 30% by building internal frameworks and developer tooling; managed 10+ engineers. Delivered key solutions including EHR integration for M Health Fairview, AWS Amplify platform for Thrivent, and indoor navigation for Hollywood Park.
Senior iOS Developer
CognizantDec, 2013 - Apr, 20151 yr 4 months
Senior Engineer
CognizantJul, 2010 - May, 20154 yr 10 months
Led fullstack development across .NET backend, iOS/Android platforms; foundation for leadership trajectory.
Senior Engineer
InfosysJul, 2010 - May, 20154 yr 10 months
Led fullstack development across .NET backend, iOS/Android platforms; foundation for leadership trajectory.
Achievements
- Twilio Hoots
- Deloitte's Outstanding, Applause, and Spot awards
- 2nd Prize from Help Age India (Social Cause)
- Cognizant's Star Performer & Infosys spot awards
Major Projects
15Projects
AMEX Mobile App
Mobile app with 40M+ monthly active users across 20+ markets. Built using Swift, Kotlin, BFF, Redis, Couchbase, Firebase.
Calorie Meter
Health and fitness app published on App Store with functionalities for credit card users. Technologies: Swift, Kotlin, BFF, Redis, Couchbase, Firebase.
COV-AID - AI Thermal Scanner
AI-based mask and temperature scanner using OpenCV to automate COVID screening.
Twin Health App & Clinical Platform
AI-powered lifestyle coaching to reverse Type 2 Diabetes. Built with Flutter, Vue.js, Node.js, AWS, Firebase stack.
DeciD - CI/CD Generator
Auto-setup generator reducing CI/CD setup time by 90%. Built with Vue.js and Django, open-source.
Authy 2FA & Conversations SDK
Secure 2FA and omni-channel SDK with 10M+ downloads. Technologies: Swift, Kotlin, KMP, Vue.js, AWS Kinesis, Kafka, SDK packaging, AWS, ELK, Java.
Portfolio Website
Dynamic site with Django, PostgreSQL (hosted on Railway).
Wave - AR Navigation
Indoor AR navigation prototype using ARKit.
M Health Fairview
Digital patient experience providing integrated healthcare applications with EHR integration. Technologies: Vue.js, Firebase, Node.js, EPIC MyChart, Swift, Kotlin, Jenkins, Azure infrastructure, FHIR/HL7, EHR, Clinical Workflows, HIPPA.
Discord Bot
ChatGPT integration for contextual interactions.
Ai World
Aggregator web app for AI tools, news, and courses. Built with Vue.js and Firebase.
Thrivent App
Client-advisor engagement platform. Open source contributions using Swift, Kotlin, Firebase, AWS Amplify architecture.
Hollywood Park App
Indoor navigation and ticketing platform for sports venues. Technologies: SwiftUI, Firebase, Jenkins, Sitecore, CMS.
ITG group, Field sales application
Field sales application that helps reps manage retail audits, surveys, orders, stock, and wallet operations with offline access. Technologies: Salesforce, MySQL, iPad app.
MyHope - Observational Trial App
A personalized digital network simplifying the Multiple Myeloma patient journey through connected care, remote monitoring, and patient data empowerment. Technologies: Mobile SDK, AWS, FHIR/HL7, EHR, Clinical Trial Workflows, HIPPA.
Education
Bachelor of Technology (B.Tech)
ITER College (2010)