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Hi, I'm Lexman

Full Stack Engineer
Backend & Cloud Specialist.

Designing scalable, high-performance web services. Expert in GCP, Node.js, and revenue-driven Ad-Tech solutions.

Download Resume

Node.js

Google Cloud Platform

Kubernetes

NestJS

BigQuery

Redis

TypeScript

PostgreSQL

Lexman Sreenivasan

Scalable Systems Architect

I am a backend-focused developer with a strong foundation in designing high-throughput web services. My expertise lies in optimizing data processing and building cloud-native solutions that drive measurable technical impact.

From Ad-Tech ecosystems to distributed architectures, I work with cross-functional teams to deliver reliability and speed.

Philosophy

Efficiency through
Architecture.

Driven by a strong focus on problem-solving, I believe in building systems that aren't just functional, but scalable and resilient under peak traffic.

— Backend — Cloud — DevOps — Database — API Design — Architecture —
2+

years of
Professional
Experience

Work Experience

Jun 2023 - Present

Software Developer

Gizmeon Technologies

  • Played a key role in scaling an Ad Exchange platform, contributing to publisher onboarding and backend services for monetization.
  • Optimized campaign and RTB servers using Pub/Sub and BigQuery, supporting a 60% revenue increase.
  • Enhanced reporting solutions using Node.js, PostgreSQL, and Redis, delivering actionable insights.
  • Supported device management for 2,500+ devices using Firebase Cloud Messaging (FCM).

Infrastructure Focus

Cloud & DevOps Engineer

Infrastructure & Automation

  • Automated CI/CD pipelines using Docker, GKE, Cloud Build, and ArgoCD, improving deployment reliability.
  • Managed and tuned Redis clusters in Kubernetes for high availability during peak traffic.
  • Optimized OTT platform features (Video.js, VMAP ad integrations), boosting ad engagement by 35%.
  • Implemented server-side ad caching to reduce latency across placements.

Data & Systems Focus

Data & Integration Specialist

Gizmeon Technologies

  • Designed and maintained backend data pipelines for high-throughput analytics and reporting.
  • Integrated Mapbox with real-time overlays to support location-based ad targeting.
  • Contributed to monitoring and observability initiatives, improving issue detection and system reliability.

Technical Impact

Ad Exchange Scaling

Ad Exchange Scaling

Implemented RTB servers using Pub/Sub and BigQuery, supporting a 60% revenue increase.

OTT & Video Integration

OTT & Video Integration

Optimized HTML5/Video.js players and VMAP ad integrations, boosting engagement by 35%.

Ad Exchange Scaling

Cloud Infrastructure

CI/CD automation with ArgoCD, Docker, and GKE. Enhanced deployment reliability and speed.

Device Management

Device Management

Monitoring workflows for 2,500+ devices using Firebase Cloud Messaging (FCM).

Education & Certs

2019 - 2022

Bachelor's Degree in Computer Applications

College of Applied Science, Adoor, India

Language Proficiency

English: C1 (CEFR)

IELTS General

Download Certificate

Let's Build the Future

Based in Mannheim, Germany. Open to discussing backend engineering roles and cloud architecture opportunities.

vslexman@gmail.com

+49 15511046687

Well, I am a space enthusiast too!