Vadiraj Hosur

Software Engineer

San Francisco, California, United States15 yrs 3 mos experience
Highly Stable

Key Highlights

  • 18+ years in enterprise-grade distributed systems.
  • Patented encryption performance optimization.
  • Expertise in cloud-native orchestration and microservices.
Stackforce AI infers this person is a Cloud Computing and Distributed Systems expert with a focus on enterprise solutions.

Contact

LinkedIn

Skills

Core Skills

Distributed SystemsInfrastructureCloud StorageScalabilityDatabasesSoftware DevelopmentPre-production

Other Skills

Software ObservabilityApache KafkaObject StorageKubernetesDockerContinuous Integration and Continuous Delivery (CI/CD)Apache FlinkSystem ArchitectureGo (Programming Language)Python (Programming Language)C (Programming Language)MultithreadingOracleEncryptionPerformance Testing

About

I am a self-driven Principal Software Engineer with 18+ years of experience architecting and delivering enterprise-grade distributed systems and cloud infrastructure. My expertise spans transactional and distributed storage systems, observability, and high-availability architectures that power mission-critical applications at scale. Over the course of my career, I have: Designed and implemented highly available, fault-tolerant storage and data protection solutions, including encryption, backup/recovery, and unstructured data management. Built and optimized database internals such as in-memory columnar stores, indexing, compression, and efficient data block layouts. Delivered scalable observability pipelines (Kafka–Flink–Prometheus/Grafana) enabling real-time insights for AI/ML clusters and enterprise cloud systems. Contributed to cloud-native orchestration and microservices deployments on Kubernetes, OCI, AWS, and GCP, with hands-on experience operating systems at scale. Filed and received a patent on encryption performance optimizations that improved data security without compromising throughput. Mentored and led engineering teams, while also supporting customer escalations and on-call production systems in Fortune 500 companies and high-growth startups. With a proven track record across Oracle Cloud Infrastructure, Salesforce Database (SDB), EMC, and MapR, I bring deep expertise in distributed systems, cloud platforms, and database engineering—always focused on reliability, scale, and performance.

Experience

Harness

Senior Staff Engineer

Dec 2025 – Present · 3 mos · San Francisco Bay Area · On-site

InfrastructureDistributed SystemsSoftware Observability

Oracle

2 roles

OCI Principal Software Engineer

Apr 2023 – Feb 2026 · 2 yrs 10 mos · Remote

  • Designed and implemented a scalable Metrics Message Bus with Apache Kafka to monitor thousands of devices in GPU cloud. This helps monitor the infrastructure used by customers, such as OpenAI.
  • Architected and optimized components in OCI Object Storage, improving storage reclamation by 30% and GC runtimes by 20%.
  • Refactored a 2000+ Java file monolithic repository to modular micro-services, improving deployment speed and maintainability.
Cloud StorageApache KafkaDistributed SystemsScalabilityObject StorageKubernetes+6

Principal Engineer

Apr 2023 – Mar 2024 · 11 mos · Remote

  • Oracle Health & AI is a new line of business that aims to leverage Oracle's expertise in IaaS and SaaS to transform the health care industry, provide patient-centric care and make the best clinical tools available around the world (https://www.oracle.com/industries/healthcare/).
  • Millennium Platform is building the next generation of health care platform using cloud native solutions to provide superior patient experience. The platform and control plane build foundational building blocks that make up the stack and services to manage environment lifecycle events. Millennium provides consistent customer experience across management operations while providing mission critical functions ranging from patient prescriptions to surgery rooms to customers across the globe.
C (Programming Language)MultithreadingOracleDistributed SystemsScalability

Salesforce

Lead Software Engineer

Dec 2018 – Mar 2023 · 4 yrs 3 mos · San Francisco Bay Area

  • ● CRM Database features development
  • ● Tenant Level Encryption: Design (patented), development , testing and deployment
  • ● Fault Injection Framework: Using docker and k8s, Identified over 30 release blocking bugs.
  • ● Performance and Stress testing: Benchmarking, performance tuning and stress testing to identify and eliminate bottlenecks
DatabasesSoftware DevelopmentKubernetesPre-productionDistributed Systems

Mapr

Storage research engineer

Jan 2018 – Dec 2018 · 11 mos · Santa Clara · On-site

  • Drove requirements for Snapshot restore and storage analytics features.
  • Delivered competitive insights that highlighted MapR’s software defined storage capabilities.
  • Engaged in performance benchmarking of MapR file system for consumption of Field and Sales Engineers.
  • Improved transactions per second and proved that MapR FS didn’t add noticeable overhead when running TPC-B workload.
  • Designed and facilitated demos that utilized MapR file system with Kubernetes, multi-tiering with Erasure coding, and object tiering
Go-to-Market StrategyStrategic PartnershipsCustomer EngagementProduct Road MappingRequirements Management

Dell emc

Principal Software Engineer

Mar 2015 – Dec 2017 · 2 yrs 9 mos · San Francisco Bay Area

  • Data Domain Backup Appliance
  • Focussed on performance and long term retention.
  • Helped win big customers by identifying and eliminating bottlenecks.
Requirements AnalysisSoftware DevelopmentCustomer Satisfaction

Hgst, a western digital company

Principal Software Engineer

Jul 2014 – Mar 2015 · 8 mos · San Jose

  • Distributed monitoring of hundreds of nodes using RabbitMQ and Python
  • Frame work for storage analytics.
  • S3 based object storage.
  • Ceph, Swift and HDFS

Oracle

Principal Engineer

Oct 2010 – Jul 2014 · 3 yrs 9 mos

  • . Member of Oracle's flagship Relational database team.
  • . Helped thousands of customers solve issues around Oracle DBFS.
  • . Speaker at Oracle Open World
Customer EngagementSoftware DevelopmentStrategy

Education

Jnana Prabodhini

Pune Institute Of Computer Technology (PICT)

BE — Computer Science

San José State University

Master of Science (MS) — Computer Engineering

San José State University

Master of Science - MS — Computer Engineering

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