Devendra Kumar

CEO

Bengaluru, Karnataka, India9 yrs 10 mos experience

Most Likely To Switch

Key Highlights

10 years of experience in distributed systems.
Expert in architecting scalable microservices.
Proven leadership in cloud-native analytics.

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer specializing in Cloud Analytics and UCaaS solutions.

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Skills

Core Skills

Cloud-nativeBig DataMicroservices ArchitectureDistributed Systems

Other Skills

ScalaData ModelingData ingestionStreaming architectureBusiness Intelligence modelingAkkaKafkaFreeSWITCHKamailioREST APIsRedisGrafanaKibanaJenkinsGitHub

About

Senior / Lead Software Engineer | Distributed Systems | Scala | Big Data | Cloud Analytics Engineering leader with 10 years of experience architecting and leading the development of highly scalable, distributed systems using Scala, Akka, Play Framework, and Apache Spark. Proven track record of technical ownership, driving end-to-end delivery of mission-critical microservices capable of handling millions of requests per second with high availability and fault tolerance. Experienced in leading design discussions, mentoring engineers, conducting architecture reviews, and partnering with product and platform teams to deliver scalable solutions. Strong expertise in Big Data ecosystems, stream processing, payment gateway integrations, and contact center platforms, delivering systems used at enterprise scale. Worked across multiple domains including Media (OTT platforms), e-Learning, UCaaS / Contact Center solutions (inContact), and cloud-native analytics platforms. Currently contributing at Hewlett Packard Enterprise (HPE) on the GreenLake Platform Analytics (GLPA), helping design and build resilient, cloud-scale analytics services for enterprise customers. Core Skills & Keywords: Scala, Akka Actors, Akka Streams, Play Framework, Apache Spark, Microservices Architecture, Distributed Systems, Big Data, Cloud-Native, High-Throughput Systems, Low-Latency Systems, REST APIs, Event-Driven Architecture, Payment Gateways, Contact Center Solutions, OTT Platforms, UCaaS, Leadership, Mentoring, System Design, HPE GreenLake

Experience

9 yrs 10 mos

Total Experience

2 yrs 5 mos

Average Tenure

2 yrs 11 mos

Current Experience

Hewlett packard enterprise

Lead Cloud Engineer

Jul 2023 – Present · 2 yrs 11 mos · Bengaluru, Karnataka, India · Hybrid

As a Staff-level Engineer on the HPE GreenLake Platform Analytics (GLPA) team, I played a key role in architecting, scaling, and operating enterprise-grade data and analytics platforms that power HPE’s GreenLake ecosystem. My responsibilities spanned end-to-end system ownership, from data ingestion and streaming architecture to analytics, BI modeling, ML enablement, reliability engineering, cost optimization, and governance.
I operated as a technical leader and multiplier, influencing architectural decisions across teams, mentoring engineers, leading proof-of-concepts, driving production excellence, and collaborating with platform, infrastructure, and business stakeholders. The systems I helped design and run process large-scale metadata from devices, lifecycle events, and external sources, supporting real-time and batch analytics, ML modeling, and executive reporting at global enterprise scale.

ScalaData ModelingCloud-NativeBig Data

Cisco

Could Engineer III

Apr 2021 – Jul 2023 · 2 yrs 3 mos · Bangalore Urban, Karnataka, India · Hybrid

Designed, developed, and owned multiple high-scale microservices within the Cisco Webex Contact Center platform, focusing on voice media and storage services that power real-time customer communications.
Led enhancements to the Voice Media Manager (VMM) microservice, implementing surge protection mechanisms that significantly improved call stability and system reliability during peak traffic conditions.
Optimized the Storage microservice, reducing call recording processing latency through performance tuning, efficient data flow design, and system-level optimizations.
Contributed to the Real-Time Media Service (RTMS) initiative by integrating FreeSWITCH (real-time media engine) and Kamailio (SIP server), eliminating hardware dependencies and enabling horizontal scalability for high volumes of concurrent calls.
Analyzed real-time communication metrics including call surges, call volume, and system performance, translating insights into architectural improvements and feature enhancements.
Collaborated closely with cross-functional teams (product, QA, SRE, and operations) to deliver production-ready, highly available services.
Mentored junior engineers, promoting best practices in distributed systems design, performance optimization, and scalable microservice architecture.
Tech Stack:
Scala, Akka, Kafka, FreeSWITCH, Kamailio, REST APIs, Redis, Grafana, Kibana, Jenkins, GitHub, Distributed Systems, Real-Time Media Systems

ScalaAkkaKafkaFreeSWITCHKamailioREST APIs+7

Servion global solutions

Senior Software Engineer

Sep 2020 – Mar 2021 · 6 mos · Bengaluru, Karnataka, India · Remote

Designed and developed high-performance adaptive and presence microservices to track agent and user presence, status, and address books across multiple communication platforms including Microsoft Teams, RingCentral, Atos, and GoToConnect.
Built highly concurrent, fault-tolerant services in Scala using Akka, leveraging the Actor model to handle extreme throughput and low-latency requirements.
Engineered RESTful APIs and core business logic to enable seamless integration with third-party UCaaS platforms and internal systems.
Achieved sub-400 microsecond API latency while sustaining peak traffic of up to 10 million requests per second, meeting strict real-time performance SLAs.
Improved code quality, reliability, and maintainability by increasing automated test coverage, reducing production defects, and enforcing clean architecture principles.
Collaborated closely with cross-functional teams to deliver scalable, production-grade services supporting large-scale contact center operations.
Tech Stack:
Scala, Akka, Slick, REST APIs, MySQL, Kafka, AWS, Distributed Systems, High-Throughput Systems

ScalaAkkaSlickREST APIsMySQLKafka+3

Yupptv inc.

Senior Software Engineer

Jul 2016 – Sep 2020 · 4 yrs 2 mos · Hyderabad, Telangana, India · On-site

Designed and delivered a subscription-based payment integration system from sandbox to production using Razorpay SDK, managing webhooks for payment verification, cancellations, and refunds to ensure seamless user experiences.
Integrated multiple payment gateways and OTT wallets including Amazon Pay, Roku Pay, PayPal, and Braintree, supporting both synchronous and asynchronous REST APIs for recurring payments at scale.
Built a Kafka-based “Continue Watching / Recently Watched” service, processing real-time user activity events with window-based progress tracking, configurable via CMS and reusable across multi-tenant platforms.
Leveraged Redis for low-latency reads and persisted data into relational databases for durability and analytics use cases.
Architected and developed backend systems from scratch for B2B international and domestic partners (Ooredoo Oman, Intigral, Digicel, PayTM, Vodafone, Idea, Dailyhunt, Samsung, Ola), delivering secure metadata and streaming APIs.
Implemented geo-restrictions, token-based authentication, and session management, supporting millions of active users across partner ecosystems.
Designed and optimized database schemas, stored procedures, and subscription workflows, ensuring performance and scalability.
Developed a centralized stream monitoring tool to track live channel, movie, and series health, automating failure detection and reducing manual operational effort.
Built Angular-based native web pages for OTT metadata (live TV, movies, series, news) embedded within partner Android applications.
Optimized existing Scala services during early career phase, adding search APIs (Lucene), dynamic metadata generation, and EPG APIs supporting 500+ channels across time zones.
Mentored junior engineers in API design, business logic implementation, and scalable system architecture.
Tech Stack:
Scala, Akka, Kafka, Spark, Play Framework, REST APIs, Slick, PostgreSQL, Redis, AWS, Kubernetes, Jenkins, CI/CD, Microservices Architecture