Ranjeewa Weerasinghe

Led multiple engineering teams building Intellistack Streamline, a customer-facing, no-code business process automation platform built on Java microservices and a Next.js (React) frontend, taking it from concept to onboarding production customers in 18 months

Partnered daily with product managers, both on my teams and across the org, to translate customer needs into roadmap and technical scope spanning both backend and frontend development

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

Wrote Open Raven's first data scanner and grew it into a dedicated, fully remote team of 8 frontend and backend engineers, 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

Improved and maintained microservices and frameworks written in Groovy, Java, Kotlin, and Node, powering Tenable's cloud offering

Designed a new RBAC system and led migration from a homegrown authentication system to Okta

Built the industry's first LAANC integration approved by the FAA, taking it from concept to certified production integration by collaborating directly with FAA counterparts to develop and validate their API endpoints

Led and mentored a team of 4 to 6 developers, growing junior engineers' technical skills while adopting Agile practices for the first time

Refactored airspace generation software into containerized microservices deployed on Kubernetes, enabling modularity, testability, and zero-downtime deployments

Created CI pipelines to support the new microservices architecture

Served as Technical Lead across multiple teams totaling 15 engineers, including leading the migration of Jama, a customer-facing SaaS product built on React, from a monolithic Java webapp to a service-oriented architecture, enabling faster, more independent releases, evaluating and designing service frameworks and building a Docker-based deployment model for both SaaS and on-premises installations

Worked closely with engineering leaders and product managers throughout my tenure to scope, prioritize, and deliver features across the platform

Developed Jama's first analytics product, including 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

Hired and led a team of 2 engineers, establishing source control, CI, and collaboration environments for the development team

Built hybrid cloud infrastructure on AWS for development and deployment

Implemented core components of a cardholder-facing debit card platform, including card ordering and account management, CSR functionality, a services layer, IVR and SMS integration, and batch processing of ISO 8583 transactions

Achieved Visa validation and successfully tested the platform with real cards, before leaving ahead of the platform's public launch