Headline

Software Engineer @ HPE | Telecom Protocol Engineering (SIP, LTE, Diameter, TLS) | Java Backend & JVM Performance | SCTP/TCP-IP/IPv6 | Telco Infrastructure engineer

About

I build and debug the software that real-time telecom networks run on. At HPE, I own SIMULAP, a Java-based protocol testing platform used to validate telecom infrastructure before it reaches production. My work sits at two layers most engineers only touch one of: the protocol layer (SIP, LTE, Diameter, TCAP, TLS over SCTP/TCP/UDP) and the systems layer (JVM internals, concurrency, thread management, performance). The work I'm most proud of isn't a feature -it's a production incident. A live telecom platform was pinned at 302% CPU with a hanging JVM startup. Using Java Mission Control and thread dumps, I traced it to lock contention: threads busy-waiting on a shared monitor, burning cycles with zero useful work. Removing the contention point brought CPU down to 0.7%. That's the kind of problem I like - where the fix requires understanding both the protocol traffic and the runtime underneath it. Concretely, I've: Built LTE and SIP protocol plugins with TLS support over TCP/SCTP, Added IPv6 support to a Diameter implementation used in production, Redesigned data structures and thread management to resolve critical performance issues under concurrent load, Owned releases end-to-end: RPM packaging, Docker images, documentation, CI/CD via Jenkins Before this, I worked on HPE's OpenCall Media Platform (SIP, RTP, real-time audio/video), where I optimized RTP stream handling and built traffic-generation tooling to simulate real call, DTMF, and media scenarios at scale. I'm looking for roles where protocol-level networking knowledge and systems-level debugging both matter, telecom software, backend infrastructure, distributed systems, or platform engineering - ideally in Europe, Singapore, or Australia. Open to relocation, visa sponsorship, remote, or hybrid. Outside of telecom infra, I build systems projects for the practice: a Go-based multi-tenant AI security research prototype, and a multi-agent reinforcement learning system for race strategy. Details in Featured.

Location

Bengaluru

AI stack

aistudio

claude code

claude

cursor

claudecode

githubcopilot

Work experience

Software engineer-1 at Hewlett Packard Enterprise, Sep 2024 - Feb 2026 · 1 yr 6 mos, sole owner of SIMULAP, a Java-based telecom protocol testing platform built on Apache JMeter, used to validate infrastructure protocol behavior before production release. Diagnosed a live production incident where CPU usage hit 302% and JVM startup hung; used Java Mission Control and thread-dump analysis to isolate lock contention as the root cause, and eliminated it - reducing CPU usage to 0.7% Designed and built LTE (4G) and SIP protocol plugins with TLS-secured communication over TCP and SCTP Added IPv6 support to a production Diameter implementation Redesigned core data structures and thread-management logic to remove synchronization overhead under high-concurrency load Own end-to-end releases: RPM packaging, Docker image builds, CI/CD pipelines (Jenkins, shell scripting), and release documentation Built an internal RAG chatbot (FAISS + LangChain) to speed up internal knowledge retrieval for the engineering team Set secure coding standards and drive architectural decisions for the platform

SWE Intern at Hewlett Packard Enterprise, Feb 2024 - Aug 2024 · 7 mos, Backend engineer on HPE's OpenCall Media Platform, a telecom product supporting real-time audio/video services (IVR, ASR, TTS, conferencing). Built the "Audio-Video Profile with Feedback" feature in Core Java/REST, improving RTP stream handling quality and reliability under real-time load Worked on EMAP (EMulator Application Profiler), a traffic generator simulating real ISUP/ISDN/SIP call and media traffic- calls, speech, DTMF, and dialing behavior Worked directly with SIP, RTP, extended RTP, HTTP(S), and TCP/IP in a production telecom stack (Apache Tomcat, Maven, Spring Boot) Built Python/bash log-analysis automation that cut manual log-review time for the team Fixed backend defects in the media platform's real-time protocol handling, contributing directly to platform stability

Mentee CWiCS at Cisco, May 2023 - Jul 2023 · 3 mos

Research Intern at Indraprastha Institute of Information Technology, Delhi, May 2022 - Dec 2022 · 8 mos, Delhi, India, Worked under Dr. Tavpritesh Sethi on a project named Public Health Resources (PHR). The primary objective of this project was to digitize medical prescriptions and documents.

Contributor at GSSoC'22 at GirlScript Summer of Code, Mar 2022 - Jun 2022 · 4 mos, Selected as one of the open-source contributor to contribute into various projects for a period of three months

Education

B.Tech, Electronics and Telecommunication Engineering, B. M. S. College of Engineering

Public links

github: https://github.com/garimaprajapati-bit

leetcode: https://leetcode.com/prajapatigarima