Bengaluru, Karnataka, India

Hi, my name isSunny Kumar

Backend engineer with 8+ years building scalable, high-concurrency systems — from multi-million event surveillance platforms to fintech APIs. I care about low latency, clean architecture, and shipping things that hold up in production.

$ contact me

LinkedIn/Email/Call

sunny-kumar.ts

1const sunny: Engineer = {
2role: "Sr. Software Engineer",
3company: "Ethereal Covenant",
4location: "Bengaluru, India",
5experience: "8+ years",
6stack: ["Node.js", "Express", "PHP", "Laravel"],
7focus: ["scalable backends", "low latency", "high concurrency"],
8currently: "shipping AI features with LLM APIs",
9};
10
11// open to interesting backend problems

8+: Years of experience
500+: Cameras onboarded
60+: Sites integrated
30%+: Faster API responses

01// who am i

About

bash — whoami

sunny@dev:~$ whoami --verbose

Dynamic and accomplished Software Engineer with over 8+ years of experience in the development and implementation of scalable backend systems. Highly adept at managing high concurrency loads while optimizing performance for low latency. Proficient in utilizing Node.js, Express.js, and both relational and non-relational databases in cloud environments, ensuring reliable and efficient backend solutions.

sunny@dev:~$ ▍

▹Architect high-concurrency, low-latency backend systems end to end.
▹Mentor cross-functional teams — coding guidelines, reviews, automated tests.
▹Ship AI-powered features on top of OpenAI, Claude, and Gemini APIs.
▹Tune databases for scale: read replicas, indexing, caching, query profiling.

02// package.json → dependencies

Tech Stack

{ }

languages & runtime

JavaScript
Node.js
Express.js
PHP
Laravel
REST APIs

architecture & design

System Design
Backend Architecture
API Design
Scalability

[ ]

data & persistence

Database Design
Relational Databases
NoSQL Stores
Query Optimization
Read Replicas
Indexing & Caching
Elasticsearch

</>

infra & devops

CI/CD Pipelines
ELK Stack
Cloud Environments
Monitoring & Logging
Performance Tuning
System Resilience

( )

ai & integrations

OpenAI
Claude
Gemini
LLM Integration
OAuth2 / Passport
CRM Tooling
CCTV Vendor APIs

ways of working

Agile / Scrum
Code Review
Team Mentoring
System Architecture
Automated Testing

03// git log --author="Sunny Kumar" --graph

Experience

feat/ethereal-covenantHEAD → currentMay 2023 — Present·3 yrs 4 mos
Senior Software Engineer @ Ethereal Covenant
Bengaluru, India
- Managed and mentored a cross-functional team, establishing coding guidelines, code review processes, and automated test requirements to ensure code quality and foster professional growth.
- Drove agile delivery with CI/CD methodologies, resulting in a 25% increase in deployment frequency.
- Partnered with the CTO to conceptualize and implement comprehensive end-to-end solutions, emphasizing server-side development and seamless API integration.
- Built and maintained multiple CCTV vendor integrations powering a unified surveillance platform handling multi-million daily event volumes — AJAX (SIA protocol) connectors onboarding 500+ cameras and NxWitness integrations across 60+ sites.
- Led the development and delivery of a plug-and-play CCTV security product using Node.js, owning end-to-end architecture, a motion detection plugin, and dashboards on low-cost hardware.
- Integrated AI-powered features with LLM APIs including OpenAI, Claude, and Gemini, enabling intelligent automation, analytics augmentation, and user-facing AI capabilities.
- Node.js
- JavaScript
- CCTV Integrations
- LLM APIs
- CI/CD
feat/aspire-fintechSep 2021 — May 2023·1 yr 9 mos
Backend Engineer @ Aspire
Singapore (Remote)
- Configured and managed ELK (Elasticsearch, Logstash, Kibana) clusters to enhance logging and search performance, improving application efficiency and troubleshooting effectiveness.
- Designed read/write database separation in Laravel using dedicated read replicas to offload reporting workloads — improving API response times by 30%+ under peak fintech traffic.
- Integrated advanced CRM tools and chat functionality to streamline sales operations and support, resulting in a 20% increase in engagement and satisfaction.
- Automated customer-interaction workflows and analytics dashboards, reducing manual follow-ups and improving pipeline visibility across enterprise customers.
- Implemented OAuth2 authentication with Passport, securing third-party API access while maintaining data integrity and compliance.
- Laravel
- PHP
- ELK Stack
- OAuth2
- CRM
feat/myhealthcareApr 2019 — Aug 2021·2 yrs 5 mos
Senior Backend Developer · Backend Developer @ MyHealthcare Technologies
Bengaluru, India
- Designed and delivered 10+ business intelligence and reporting modules with interactive dashboards, letting leadership track revenue, acquisition, and operational KPIs — improving decision velocity by 15%.
- Engineered a high-impact coupon code and promotions platform for FORTIS Hospitals, powering targeted campaigns across large hospital networks and thousands of users.
- Built configurable rule engines and eligibility frameworks so marketing teams could launch offers without engineering involvement, shortening rollout cycles by 40%.
- Optimized high-traffic Laravel applications by refactoring complex Eloquent queries and introducing indexing, caching layers, and query profiling — cutting page-load times by 35–50%.
- Led database-performance initiatives including schema redesign, query-execution analysis, and background-job optimization for better production stability.
- Laravel
- Eloquent ORM
- BI Dashboards
- Caching
- Rule Engines
feat/unocoinSep 2018 — Apr 2019·8 mos
Software Developer @ Unocoin
Bengaluru, India
- Reviewed and optimized API architecture, demonstrating flexibility and problem-solving across the stack.
- Automated the user KYC flow, reducing company costs and improving efficiency through backend automation.
- Optimized SQL queries, achieving a 20% improvement in API load time.
- Contributed to an Agile team, adapting quickly across short release cycles.
- REST APIs
- SQL
- KYC Automation
- Agile

04// the foundations

Education

2015 — 2017

Master of Computer Applications (MCA)

Jharkhand Rai University, Ranchi

Computer Science

2011 — 2014

Bachelor of Computer Applications (BCA)

Usha Martin Academy, Ranchi

Computer Science

2009 — 2011

Intermediate

Barhi Inter College, Barhi

Science

// languagesEnglish — Professional WorkingHindi — Native or Bilingual

05// say hello

Contact

contact.json

sunny@dev:~$ cat contact.json

{
  "email": "hello@sunnykumar.dev",
  "altEmail": "proelitesunny@gmail.com",
  "phone": "+91 9708530250",
  "linkedin": "in/proelitesunny",
  "location": "Bengaluru, Karnataka, India",
  "status": "open to a good conversation"
}