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Ranjeewa Weerasinghe

Ranjeewa Weerasinghe

Engineering Leader

Bend, OR, US

Background


About

About

I'm an engineering leader who has built things from scratch as both an individual contributor and as a leader brought in to stand up a team and its architecture from day one. I've done this across early-stage startups, not-for-profit organizations, and Fortune 100 companies, leading distributed teams of full-time engineers and contractors across timezones and continents. I'm a proponent of lean and agile methodologies and test-driven development, and I do my best work in small, highly-collaborative teams that ship frequently.

Work Experience

Work Experience

  • Director of Engineering, Intellistack (formerly Formstack)

    Jun, 2024 - May, 20261 year 11 months

    • Directed engineering for Intellistack Streamline, a no-code business process automation platform built from the ground up in 18 months

    • Led the Data Fabric team, integrating 12 data source types such as RDS, API-driven, and FHIR-based EHR systems into a common format for the platform

    • Led the Integrations team, connecting 15+ systems via an iPaaS for file, email, and event workflows

    • Managed 5 to 12 people, including other engineering managers, across a distributed mix of full-time employees and contractors

  • Senior Software Engineer / Technical Director, Open Raven (acquired by Intellistack)

    Jul, 2020 - Jun, 20243 years 11 months

    • Wrote Open Raven's first data scanner and grew it into a dedicated scanning team, helping establish the DSPM (Data Security Posture Management) product category

    • Built the only scanning solution for file and data stores across AWS, GCP, and Azure that ran entirely within the customer's own environment

    • Delivered a scanning engine capable of identifying sensitive data at cloud scale, forming the core of Open Raven's DSPM product

    • Owned technical architecture, project management, and scrum master responsibilities for a team spanning the EU and US, in addition to writing code

    • Grew from individual contributor to Technical Director, taking on team leadership, hiring, and architectural ownership as the company scaled

  • Senior Software Engineer / Tech Lead, Tenable

    Nov, 2018 - Jul, 20201 year 8 months

    As an engineer on the Platform Engineering team, worked on the core frameworks and services powering Tenable's cloud offering.

    • Evaluating 3rd-party identity platforms, and migrating from homegrown authentication system to Okta

    • Designing and implementing a new RBAC system

    • Improving and maintaining microservices and frameworks written in Groovy, Java, Kotlin, and Node

  • Lead Java Engineer, Skyward, a Verizon company

    Nov, 2017 - Nov, 20181 year

    Skyward builds software to manage commercial UAV (drone) operations. Hired to lead the development team in adopting Agile practices, refactor the legacy codebase to enable faster deployment, and to mentor junior developers.

    • Refactored airspace generation software for modularity, increased testability, enabling zero-downtime deployments

    • Built the industry's first certified LAANC integration with the FAA, collaborating directly with agency counterparts to develop and validate their API endpoints

    • Created CI pipelines, containerized services and started using Kubernetes for deployment

  • Technical Lead, Jama Software

    Oct, 2011 - Feb, 20175 years 4 months

    • Led the team migrating Jama from a monolithic Java webapp to a SOA – including evaluating and designing service frameworks, building services, and developing a Docker-based deployment model for SaaS and on-premises installations

    • Developed Jama's first analytics product – data collection endpoints, ETL into ElasticSearch, and visualization with Kibana

    • Designed a new technical hiring flow for Jama, resulting in a more efficient and consistent interview process, and better quality hires

    • Built multiple integrations between Jama and other products, using REST/SOAP APIs and custom libraries

  • Architect (contract), Agilivant

    Sep, 2010 - Aug, 201111 months

    First technical hire in this financial products start-up. Advising the founders on technology & platform strategy. Establishing development practices for technical hires. Creating hybrid cloud infrastructure with AWS for development and deployment.

    • Selected and configured source control, continuous integration and collaboration environments for development team

    • Implemented portions of debit card platform including card ordering and account management system, CSR functionality, services layer, IVR & SMS integration, batch processing of ISO 8583 transactions

  • Core Developer, Collaborative Software Initiative

    Jan, 2010 - Aug, 20107 months

    CSI builds and deploys enterprise software products using a unique collaborative approach and open source technologies.

    • Inno360: building an open innovation platform for organizations to manage their innovation ecosystem

    • TriSano: a Ruby on Rails open source surveillance and outbreak management application for public health

  • Technologist, Liberty Mutual Insurance Group

    Apr, 2007 - Jan, 20102 years 9 months

  • Technical Architect, ACS Government Solutions Group

    Oct, 2002 - Apr, 20074 years 6 months

  • Systems Developer – Enterprise Apps, Association of American Medical Colleges

    May, 2001 - Oct, 20021 year 5 months

  • Project Lead, WebMD Corporation

    Jan, 1999 - Jan, 20012 years

  • Senior Software Engineer, Sapient Health Network (acquired by WebMD)

    Nov, 1996 - Jan, 19992 years 2 months

Skills

Skills

  • AI

    Spring AI

    Codex

    Claude

    Cursor

  • Backend

    Java / JVM languages

    Spring

    RDBMS (PostgreSQL, MySQL)

    Redis

    ElasticSearch

  • Cloud & DevOps

    AWS

    Google Cloud Platform (GCP)

    Kubernetes

    Docker

    Serverless

    CI/CD Pipelines

  • Architecture & Tooling

    System Design

    API Design

    Microservices

Education

Education

  • Computer Science, MS, Purdue University

    - Jan, 1996

  • Computer Science, BS, University of Houston, Clear Lake

    - Jan, 1993