Rana Amritanshu Kumar
Bengaluru
Summary
Lead software engineer with expertise in high-concurrency distributed systems and event-driven architecture. Designed and implemented unified event streams and API layers using Go, Node.js, and Kafka, achieving reliable processing of over 30 million daily transactions. Directed Kubernetes cluster administration and scaling, ensuring high availability and resilience for critical backend services.
Overview
9
9
years of professional experience
Work History
Lead Software Engineer
Radisys Corporation
Bengaluru
03.2023 - Current
- Optimized the performance and reliability of 8 high-traffic microservices (Node.js, Java, Golang) within a distributed Kubernetes ecosystem, resolving systemic bottlenecks to sustain 99.99% uptime and ensuring high availability for mission-critical workloads.
- Engineered seamless release cycles by implementing custom Kubernetes lifecycle management (liveness/readiness probes, affinity rules, and priority classes), enabling zero-downtime deployments and eliminating service disruption risks for production environments.
- Automated CI/CD quality gates with SonarQube to enforce code quality and manage technical debt, ensuring consistent standards across engineering workstreams.
- Engineered and enforced automated test suites for sanity and regression testing, reducing manual validation efforts by identifying performance bottlenecks.
- Hardened system security by integrating automated scanning (WebInspect, BlackDuck) into CI/CD pipelines, eliminating critical vulnerabilities prior to deployment and ensuring 100% compliance.
- Standardized system architecture and processes via centralized documentation repository, reducing ramp-up time for new engineers and enhancing cross-team knowledge sharing.
- Led technical mentorship and code review initiatives, elevating team code quality standards and driving the professional growth of junior and mid-level engineers.
Senior Engineer
Radisys Corporation
Bengaluru
03.2023 - 12.2025
- Architected high-performance REST APIs and Kafka consumer services using Golang to manage entities and configuration profiles for the Software-Defined Passive Optical Network (SDPON) system.
- Architected a Next.js/Node.js GUI for SDPON, optimizing the deployment footprint to 300MB for hardware-constrained OLT devices.
- Managed and version-controlled Kubernetes deployment manifests to optimize cluster resource allocation and enforce high availability.
- Architected and executed automated performance and API regression suites using JMeter and Postman, isolating system bottlenecks to ensure SLA compliance.
Senior Fullstack Engineer
Brainly
Bengaluru
09.2022 - 01.2023
- Optimized complex RESTful APIs with frontend UI components using React.js, facilitating improved cross-functional data flow during global restructuring of India engineering division.
- Engineered backend microservices for community platform using Golang and Echo framework, adhering to Clean Architecture and SOLID principles for enhanced scalability and maintainability.
- Integrated RESTful APIs to enhance application functionality and user experience.
- Developed scalable web applications using JavaScript, HTML, and CSS.
- Collaborated with product teams to define technical requirements and project specifications.
Software Engineer
Brevo (formerly Sendinblue)
Noida
08.2020 - 09.2022
- Streamlined a high-concurrency email processing pipeline handling 30M daily transactions, refactoring template rendering, header injection, and delivery orchestration to optimize Node.js performance and MongoDB query latency.
- Built and scaled a mission-critical webhook processor to manage high-velocity event streams, leveraging Kafka and Redis to guarantee low-latency event delivery and message consistency.
- Architected the migration from a RabbitMQ/Redis hybrid stack to a unified Apache Kafka cluster, resolving critical scaling bottlenecks and significantly increasing throughput for core messaging services.
- Managed containerized infrastructure via Rancher and automated deployment pipelines using Argo CD, streamlining service release cycles and enhancing data telemetry and query performance through ClickHouse DB for high-volume analytical workloads.
- Engineered observability frameworks with Datadog to track system throughput, CPU, and memory metrics; integrated automated Slack alerting for continuous monitoring and proactive incident response.
- Facilitated code reviews and provided technical mentorship to maintain code standards and support onboarding of junior developers.
- Managed 24/7 on-call duties for mission-critical services by configuring PagerDuty integrations within Datadog, ensuring rapid incident detection and proactive resolution.
Backend Developer
Styledotme
Gurugram
09.2019 - 08.2020
- Engineered scalable AWS infrastructure (EC2, RDS, ElastiCache, S3) and high-throughput REST APIs, eliminating performance bottlenecks to maintain 99.99% uptime for growing user bases.
- Optimized cloud resource utilization by architecting multi-tier caching strategies and implementing materialized views, reducing infrastructure operational costs while accelerating data retrieval for high-volume vendor queries.
- Automated customer onboarding workflows, reducing manual processing time and enabling team to manage increased operational throughput without additional overhead.
Backend Developer
Appinventiv
Noida
05.2017 - 09.2019
- Implemented high-integrity data services in Node.js and PHP, optimizing low-latency response times to improve the end-user experience for high-traffic e-commerce and social media platforms.
- Architected scalable backend ecosystems for cross-platform mobile and web applications, ensuring seamless integration and robust performance for high-volume user traffic.
- Formalized API design standards and documentation protocols, streamlining service integration cycles and ensuring consistent output across diverse engineering projects.
- Translated complex business requirements into high-level system architecture, aligning technical solutions with product goals and reducing development rework.
Education
Bachelor of Technology - Electronics and Media Technology
Karunya University
Coimbatore, India06-2013
Skills
- Go (Golang)
- JavaScript (Nodejs)
- TypeScript
- Nextjs (React)
- Echo
- Expressjs
- Vuejs (Frontend)
- Laravel (Backend)
- MySQL/MariaDB
- MongoDB
- PostgreSQL
- Elasticsearch
- Redis
- Kafka
- AWS (EC2, S3, RDS)
- GCP (GKE)
- Docker
- Kubernetes
- GitHub Actions
- Datadog
- Sentry
- ELK Stack
- System design
- Agile & Scrum
- JIRA
- Code Reviewing
- Technical Mentorship
Timeline
Lead Software Engineer
Radisys Corporation
03.2023 - Current
Senior Engineer
Radisys Corporation
03.2023 - 12.2025
Senior Fullstack Engineer
Brainly
09.2022 - 01.2023
Software Engineer
Brevo (formerly Sendinblue)
08.2020 - 09.2022
Backend Developer
Styledotme
09.2019 - 08.2020
Backend Developer
Appinventiv
05.2017 - 09.2019
Bachelor of Technology - Electronics and Media Technology
Karunya University