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Ranjeewa Weerasinghe

Ranjeewa Weerasinghe

Engineering Leader

Bend, OR, US

Background


About

About

I'm a technology leader with a long view of systems, teams, and the trade-offs that shape both. I've spent over two decades working across startups and large organizations, helping build software that is resilient, understandable, and able to evolve without unnecessary friction. I value long-term professional relationships and often work with people I've partnered with before. I'm motivated by complex, worthwhile problems - and by building systems and teams that are healthy, resilient, and durable.

Work Experience

Work Experience

  • Director of Engineering, Intellistack (formerly Formstack)

    Jun, 2024 - May, 20261 year 11 months

    • Led engineering teams across multiple continents and timezones, including engineering managers, contractors, and full-time employees, to build Intellistack Streamline, a no-code business process automation platform, from the ground up in 18 months

    • Owned the Data Fabric layer, connecting heterogeneous datasources (Postgres, EHR systems via FHIR, and others) through a unified connector API

    • Owned the Integrations layer, connecting multiple types of integrations (SMS, email, file upload and others) through an IPAAS

    • Responsible for hiring and performance management for my teams, including contractor management

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

    Jul, 2020 - Jun, 20243 years 11 months

    • Built and led the scanning team responsible for the only data discovery solution covering file stores and data stores across AWS, GCP, and Azure, deployed directly within the customer's cloud environment

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

    • Delivered a scanning engine capable of identifying sensitive data at cloud scale, forming the core of Open Raven's DSPM (Data Security Posture Management) product

  • 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. Selected as Tech Lead for the Identity team, responsible for IAM initiatives.

    • 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