Available to hire
Hi, I’m Sanjeev Kumar, a Software Engineer with over 6 years of experience building scalable backend systems using Java, Spring Boot, and distributed technologies. I specialize in designing microservices, API integrations, performance tuning, and DevOps enablement. I’m passionate about reducing latency, improving reliability, and automating infrastructure to accelerate delivery.
I’ve led backend development across telecom and healthcare projects, built resilient APIs, and implemented AI-powered conversational features using LLMs. My focus is on clean code, scalable architectures, and collaborative delivery, including migrations to cloud platforms like GCP while keeping costs under control.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
Javanese
Fluent
Work Experience
Software Engineer II at 24x7.ai
September 1, 2023 - PresentDeveloped and maintained Java-based IVR solutions using a proprietary Conversation Builder; integrated external APIs including third-party verification, customer records, and payment gateways; reduced backend API response times by 85% using pagination, Redis caching, and ORM optimizations with gRPC-based microservice communication; designed fallback strategies for high-latency environments; implemented robust data-capture workflows for dynamic IVR inputs; developed AI-powered agentic bots using LLMs and Generative AI frameworks; led migration to Engagement Cloud and Google Cloud Platform, reducing server costs by 30% and increasing client retention by 15%.
Software Engineer II at Nokia
May 1, 2021 - August 1, 2023Built scalable mediation components bridging telecom network elements and NMS; led backend modules in large-scale enterprise microservices using Spring Boot; created Disaster Recovery Bookkeeping mechanism reducing potential data loss by 15%; developed load/stress testing automation using K6, Python, and custom scripts; designed user and group management modules integrated with Keycloak and OpenShift; automated credential rotation; implemented API rate limiting to prevent production downtime and decreased server overload incidents by 70% through adaptive throttling; contributed to backend feature development and refactoring of legacy code to improve readability and scalability.
Software Engineer at Infostretch
July 1, 2019 - August 1, 2021Worked on Healthcare project and used OpenSource applications like gRPC, Elasticsearch, Redis-Cache, Hapi-Fhir; integrated CDP systems (mParticle) and event pipelines with Kafka; built resilient REST APIs supporting millions of authenticated requests; developed asynchronous background workers to offload heavy workloads; optimized CI/CD pipelines with automated linting, testing, and verification, reducing production deployment issues by 35%; built internal tooling and automation scripts to validate payment gateway integrations, reducing manual QA efforts by 50%; introduced real-time monitoring with custom dashboards enabling early anomaly detection and faster incident response; authored technical design docs and led cross-team reviews.
Intern at OnGraph Technologies
January 1, 2019 - May 1, 2019Created a Reddit-style content aggregation site using Angular, Spring Boot, and MySQL; implemented rating systems, moderation workflows, and discussion threads; implemented secure JWT-based authentication and bcrypt password encryption; migrated a monolithic system to microservices using Spring Boot, Docker, and Kubernetes, achieving 200% scalability and 50% efficiency improvements.
Software Engineer - II at 24/7.ai
September 1, 2023 - PresentDeveloped and maintained Java-based IVR solutions using a proprietary Conversation Builder. Integrated external APIs including third-party verification, customer records, and payment gateways. Reduced backend API response times by 85% through pagination, Redis caching, and ORM optimizations, and implemented gRPC-based microservice communication to improve throughput. Designed fallback strategies to ensure conversational continuity in high-latency environments. Implemented robust data-capture workflows to store dynamic IVR inputs. Built AI-powered agentic bots using LLMs and Generative AI frameworks, leveraging tools like ChatGPT and internal AI platforms with prompt engineering to enhance user engagement and accuracy. Directed migration to Engagement Cloud and Google Cloud Platform, achieving 30% cost reduction and improved scalability. Played a key role in client retention and project management, coordinating with cross-functional teams across multiple projects.
Software Engineer II at 24[7].ai
September 1, 2023 - PresentDeveloped and maintained Java-based IVR solutions using proprietary Conversation Builder; integrated external APIs including third-party verification, customer records, and payment gateways; reduced backend API response times by 85% using pagination, Redis-based caching, and ORM optimizations and gRPC-based microservice communication; designed fallback strategies to ensure conversational continuity in high-latency environments; implemented robust data-capture workflows to store dynamic IVR inputs; developed AI-powered agentic bots using Large Language Models (LLMs) and Generative AI frameworks; migrated to Engagement Cloud and Google Cloud Platform (GCP), reducing server costs by 30%; achieved a 15% increase in client retention; managed multiple projects.
Education
Bachelor of Computer Science at Jaipur Na Konal University
August 1, 2015 - May 1, 2019Bachelor of Computer Science at Jaipur Na Konal University
August 1, 2015 - May 1, 2019Bachelor of Computer Science at Jaipur Na Konal University
August 1, 2015 - May 1, 2019Bachelor of Computer Science at Jaipur National University
August 1, 2015 - May 1, 2019Bachelor of Computer Science at Jaipur Na Konal University
August 1, 2015 - May 1, 2019Qualifications
Java Programming Masterclass
January 1, 2022 - January 28, 2026Advanced Spring Boot & Microservices
January 1, 2023 - January 28, 2026Ka Gka for Developers
January 1, 2023 - January 28, 2026AI Prompt Engineering & LLM Applications
January 1, 2024 - January 28, 2026Java Programming Masterclass
January 1, 2022 - January 28, 2026Advanced Spring Boot & Microservices
January 1, 2023 - January 28, 2026Kafka for Developers
January 1, 2023 - January 28, 2026AI Prompt Engineering & LLM Applications
January 1, 2024 - January 28, 2026Java Programming Masterclass
January 1, 2022 - February 18, 2026Advanced Spring Boot & Microservices
January 1, 2023 - February 18, 2026Ka Gka for Developers
January 1, 2023 - February 18, 2026AI Prompt Engineering & LLM Applications
January 1, 2024 - February 18, 2026Java Programming Masterclass
January 1, 2022 - February 18, 2026Advanced Spring Boot & Microservices
January 1, 2023 - February 18, 2026Kafka for Developers
January 1, 2023 - February 18, 2026AI Prompt Engineering & LLM Applications
January 1, 2024 - February 18, 2026Java Programming Masterclass
January 1, 2022 - February 18, 2026Advanced Spring Boot & Microservices
January 1, 2023 - February 18, 2026KaGka for Developers
January 1, 2023 - February 18, 2026AI Prompt Engineering & LLM Applications
January 1, 2024 - February 18, 2026Industry Experience
Computers & Electronics, Software & Internet, Telecommunications, Healthcare, Professional Services, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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