Rajat K.

About Rajat K.

Technical Manager | Sr. Architect | Cloud & Full-Stack LeaderJava | Node.js | Python | React.js | AWS Cloud | Generative AITechnology Leader with 12+ years of experience architecting and delivering scalable, secure, cloud-native platforms across telecom, BFSI, and digital engagement domains. Proven track record of reducing latency by 30%, cutting cloud costs by 25%, and leading teams to deliver products 3x faster. Expert in Java, Node.js, Python, React.js, MongoDB, MySQL, Redis, Kafka, WebSockets AWS-native architecture: Lambda, S3, Cloud Front, ECS, SageMaker, API Gateway, Cognito, Control Tower, VPC CI/CD automation: Jenkins, GitHub Actions, Docker, Kubernetes, Terraform GenAI-powered platforms: LLM-based SaaS, conversational AI (Eva Call & Chat), content generation Mentored and scaled 8–12 member teams, enabling consistent Agile delivery- Delivered high-impact products including:• MagicCall – Telecom call-masking app (scaled to 500K+ users, financial-grade APIs)• Swipe4Win – Quiz & reward platform with secure payment integration• XGames – High-traffic gaming backend with uptime and MongoDB sharding• GenAI CMS – Scalable content platform for AI workflows• Eva Call & Chat – GenAI assistant with WebRTC-based voice & chat integration Passionate about bridging business goals with technical execution. I thrive in fast-paced product environments, building systems that are future-ready, cost-efficient, and resilient at scale.Focus Areas: Sr. Technical Architecture | Cloud & Full-Stack Leadership | Engineering Management | Solution ArchitectureWork Environment: Remote / Hybrid | Product-driven teams | Global engineering culture

Experience

1. Technical Manager

   blackNgreen

   May 2023 — Present · Gurugram, IN

   Led cross-functional backend and DevOps teams (8–10 engineers) to deliver scalable, cloud-native systems powering high-traffic gaming and subscription platforms with 99.99% uptime.Key Achievements:• Mobi-Battle (Gaming Platform): Architected and deployed a browser-based gaming portal serving 100K+ sessions/month, improving response times by 30% and boosting session stability.• GenAI Integration: Applied LLM-driven content generation in subscription and gaming products, enhancing engagement and increasing average session duration by 20%.• Cloud & Infrastructure: Designed and managed AWS environments (EC2, Route 53, SSL, VPC) ensuring secure, low-latency global access; optimized costs by 25% through right-sizing and automation.• API & Microservices: Directed delivery of REST APIs (Java, Spring Boot, PHP, Node.js) with MongoDB/MySQL clusters, supporting millions of subscription and payment transactions.• Automation & Payments: Built end-to-end workflows for 3rd-party subscription callbacks & payment gateways, reducing failures by 40%.• Leadership & Delivery: Oversaw full SDLC practices — sprint planning, technical reviews, and Agile delivery — cutting release cycles from 4 weeks to 2 weeks.• Security & Compliance: Enforced TLS/HTTPS, OAuth2.0, API security policies, ensuring zero major vulnerabilities during audits.Impact: Reduced deployment errors by 80% Improved infra performance & response latency by 30% Ensured cloud-scaled, stable environments for real-time, revenue-critical applications

Education

• D.A.V. Inter College, Muzaffarnagar (U.P.)

  Intermediate (10+2), Mathematics and Computer Science

  2005 — 2006

• D.A.V. Inter College, Un, Muzaffarnagar

  High School, Science & Mathematics

  2003 — 2004

• Feroze Gandhi Institute of Engineering & Technology, Raebareli (U.P.)

  Bachelor of Technology (B.Tech.), Computer Software Engineering

  2008 — 2012

Skills

• Php
• Managing Database
• Computer Science
• Html
• Eclipse
• Linux
• Javascriptmvc
• Javascript
• Visual C#
• Mysql
• C
• Programming
• Java Enterprise Edition
• Jquery
• Core Java
• Software Engineering
• Java
• Database Design
• Ubuntu
• Objective-C