Computer Science Undergraduate | Aspiring Software Engineer

Sehansi Perera

I design software that does more with less; AI that use fewer tokens, interfaces that make public data legible instead of overwhelming, and tools built with care rather than excess. My work sits at the intersection of open data, thoughtful AI systems, and social impact.

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About

Building with restraint, not excess

I like systems that make you stop noticing because it just works the way it should. Most of my time goes into subtraction and optimization: fewer steps, fewer cost, fewer places for something to break in a way nobody can explain later.

"Bridging the gap between raw data and human-centric systems."
Sehansi Perera
  • BASED INColombo, Western Province, Sri Lanka
  • FOCUSEfficient AI, Open Source Technology, Social-Impact Software
  • ALSO INTOVector Illustration, Violin, Language Learning
Experience

Where I've been building

Software Engineer Intern

Lanka Data Foundation · Full-time
May 2025 – May 2026 · Colombo, Sri Lanka · On-site
  • Collaborated on research-driven projects involving open data, graph databases, and AI-assisted systems, contributing to full-stack development across multiple open-source platforms.
  • Built agentic AI workflows with LangGraph, LLM orchestration, context management, multi-model support, and natural language querying over graph data, with a deliberate focus on reducing token usage.
  • Took part in the full development lifecycle: code reviews, documentation, dataset validation, bug investigation, performance optimisation, and open-source releases.
Projects

Selected work

A mix of research work, capstone projects, and fun personal projects

Education

Academic background

University of Westminster, UK

via Informatics Institute of Technology, Sri Lanka

Bachelor of Science (BSc), Computer Science
Sep 2023 – Sep 2027
Activities: IEEE Computer Society (IIT), IEEE Robotics and Automation Society (IIT), Mozilla Campus Club (IIT)

Musaeus College, Colombo-07

G.C.E. Advanced Level, Physical Science — Mathematics, Physics, Chemistry
Jan 2009 – Aug 2022
Activities: Quiz Combine, Girl Guiding, Orchestra (Violin), Junior Dancing Troupe

Positions held: Vice Treasurer, Senior Mathematics Society (2021/2022) · Junior Prefect (2016) · Primary Prefect (2013) · Patrol Vice-Leader, 23rd Colombo Girl Scouts (2017/2018)
Licenses & Certifications

Credentials

Events

Events & Community

A collection of visuals from my projects and events.

Writing

Notes, in longer form

Occasional essays on the projects, experiences and ideas I spend my time on.