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Nilabja Bhattacharya

Senior Software Engineer

Bengaluru, Karnataka, India5 yrs 7 mos experience

Key Highlights

  • Architected high-performance security infrastructure for millions of users.
  • Led cross-team delivery of critical platform services.
  • Designed systems ensuring enterprise-grade reliability under pressure.
Stackforce AI infers this person is a Backend-heavy Infrastructure Engineer specializing in Security and Performance Engineering for SaaS applications.

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Skills

Core Skills

Security InfrastructurePerformance EngineeringDistributed SystemsBackend Engineering

Other Skills

Performance TestingSoftware InfrastructureGCPObservabilityDockerJavaAuto-ScalingMonitoringSecurityCertificate ManagementAutomationGo (Programming Language)Node.jsDatabase ConnectivitySoftware Development

About

I'm a Senior Software Engineer with 5+ years of experience architecting and scaling backend security infrastructure that protects platforms serving millions of users. At Salesforce, I own performance validation and observability for Vault-based secrets management on GCP — ensuring cryptographic infrastructure sustains 3,000+ RPS with enterprise-grade reliability. Previously at PhonePe, I architected a unified AuthN/AuthZ platform from 0-to-1 that sustains 1K RPS at P99 latency of 50ms with auto-scaling, and designed a PKI system managing 100K+ certificates across 40K+ hosts. My technical depth spans Go, Java, and Python, with hands-on ownership of distributed systems built on Kafka, Redis, Elasticsearch, and MySQL. I operate at the intersection of security and performance engineering: designing systems that are both hardened and fast. From capacity planning and SLO definition to load testing and failure-mode analysis, I ensure critical security services don't just work — they work under pressure. Before security infrastructure, I shipped high-performance open-source database drivers at Oracle that reached thousands of production environments globally. I lead by raising the bar around me. I've coordinated cross-team delivery of shared platform services, driven technical roadmaps from 0-to-1, established observability standards that cut operational incidents, and mentored engineers on building production-grade systems. I thrive in ambiguity — give me an unsolved infrastructure problem and I'll deliver a system that scales. Core Expertise: - Security Infrastructure: Secrets Management (HashiCorp Vault), AuthN/AuthZ, PKI/Certificate Lifecycle, Zero-Trust Architecture - Cloud & Infrastructure: GCP, Docker, Linux, NGINX, Infrastructure-as-Code - Performance Engineering: Load Testing, Capacity Planning, SLI/SLO Design, P99 Latency Optimization, Auto-Scaling - Distributed Systems: Microservices, Event-Driven Architecture, High-Throughput APIs (3K+ RPS) - Observability & Reliability: Prometheus, Grafana, Proactive Alerting, Centralized Monitoring - Backend Engineering: Go, Java, Python, Node.js, Kafka, Redis, MySQL, Elasticsearch - Leadership: Technical roadmap ownership, cross-functional delivery, mentorship, open-source contributions

Experience

5 yrs 7 mos
Total Experience
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Average Tenure
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Current Experience

Salesforce

Senior Member of Technical Staff

Jan 2026Present · 5 mos · Bengaluru, Karnataka, India · Hybrid

  • Architected the performance testing framework for Vault-based secrets management APIs on GCP, validating system throughput at 3,000+ RPS and identifying latency bottlenecks in secret rotation and retrieval paths to ensure SLA compliance under peak load.
  • Engineered end-to-end monitoring and observability for the GCP secrets management service, defining SLIs/SLOs, building real-time dashboards, and deploying proactive alerting on API latency, error rates, and secret lifecycle health across the platform.
  • Owned reliability validation through load testing, capacity planning, and failure-mode analysis — ensuring the shared security infrastructure degrades gracefully under stress and meets enterprise-grade availability targets for all dependent services.
Performance TestingSoftware InfrastructureSecurity InfrastructurePerformance Engineering

Phonepe

Software Engineer II

Jan 2023Jan 2026 · 3 yrs · Bengaluru, Karnataka, India · Hybrid

  • Architected and delivered the design of a unified AuthN/AuthZ service from 0-to-1, consolidating fragmented access control into a single platform serving 100K+ daily requests across 4K+ active users; optimized to sustain 1K RPS with auto-scaling while reducing P99 latency to 50ms.
  • Architected an enterprise certificate management system automating the full lifecycle of 100K+ certificates across 40K+ hosts, reducing certificate-related outages by establishing automated renewal, revocation monitoring, and compliance enforcement.
  • Led the utilities track for the cloud provisioning team, coordinating cross-team delivery of shared security, observability, and access control services that became the standardized foundation for all platform teams.
  • Engineered centralized monitoring and proactive alerting infrastructure using Prometheus and Grafana, reducing mean-time-to-detection (MTTD) for production incidents and establishing safer database deployment workflows that cut operational downtime.
DockerJavaSecurity InfrastructureDistributed Systems

Oracle

Member Of Technical Staff

Nov 2020Jan 2023 · 2 yrs 2 mos · Bengaluru, Karnataka, India · Remote

  • Designed and shipped the Oracle Database dialect for Sequelize ORM end-to-end, solving compatibility gaps in query translation and feature parity to unlock Oracle DB adoption across the Node.js ecosystem — a 0-to-1 initiative driving measurable community growth.
  • Engineered the Node.js thin driver for node-oracledb, eliminating external client dependencies and reducing deployment complexity for thousands of production environments by enabling lightweight, direct Oracle Database connectivity with full DDL/DML/PL/SQL support.
  • Contributed to high-performance open-source Oracle Database drivers across Go (godror), Python (python-oracledb), and Node.js (node-oracledb), enabling secure, production-grade connectivity adopted by enterprise teams globally.
JavaGo (Programming Language)Backend EngineeringDistributed Systems

Samsung r&d institute india - bangalore private limited

Software Engineer Intern (Research team)

May 2019Jul 2019 · 2 mos · Bengaluru Area, India · On-site

  • - Developed a multimodal speech recognition system combining CNN-based lip image analysis with voice synthesis techniques, improving ASR accuracy in noisy environments by fusing visual and auditory signals for robust intent recognition.
Software DevelopmentAlgorithms

Bharat heavy electricals limited

Software Engineer Intern

Jun 2016Jul 2016 · 1 mo · Kolkata Area, India · On-site

  • Improved the security and user experience of BHEL’s Contract Monitoring System by fixing vulnerabilities, implementing secure session management, and leading a front-end redesign.
JavaJavaServer Pages (JSP)

Education

International Institute of Information Technology Hyderabad (IIITH)

Master of Technology - MTech — Computer Science Engineering

Jan 2018Jan 2020

Jalpaiguri Government Engineering College

Bachelor of Technology - BTech — Information Technology

Jan 2013Jan 2017

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