~/sunny-dalal
sunny@dalal — zsh
$ whoami: Sunny Dalal
Staff Software Engineer @ twenty.io

I build backend platforms and infrastructure — usually as the core of the product itself, powering what customers actually use. Currently at Twenty, working in defense tech.

$ cat about.md

About

Currently a Staff Software Engineer at Twenty, a defense tech startup. Before that, I spent years inside large engineering orgs — Capital One and MicroStrategy — building the backend platforms and infrastructure at the core of the product, the systems customers were actually running on.

I gravitate toward problems at the infrastructure layer: reliable APIs, resilient systems, the stuff that has to just work because it's what the product is actually built on.

--python--cpp--golang--aws--azure --kubernetes--terraform--postgresql

$ git log --stat experience/

Experience

Twenty
Staff Software Engineer
Arlington, VA · Jun 2026 – Present
  • Lead architecture and design decisions in building AI-enabled cyber-warfare systems for the U.S. military and Intelligence Community, contributing to industrial-scale cyber capabilities engineered for reliability under real-world conditions.
  • Engineering systems built around recursive graph expansion — modeling and traversing large, interconnected data structures to support operations across a large and evolving threat landscape.
  • Support platform and infrastructure engineering efforts across the broader engineering org, joining during the company's Series A and continuing through its Series B-1 raise at a $1.2B valuation.
Capital One
Senior Software Engineer
McLean, VA · Feb 2025 – Oct 2025
  • Built a distributed backend platform for enterprise customer-banking services, enabling automated API validation and compliance checks across dozens of microservices and multiple engineering teams.
  • Designed Python-based developer tooling to scaffold test harnesses and publish results into Jira X-Ray and GitHub checks, cutting manual validation effort by ~70% across 5,000+ component tests.
  • Integrated platform services into CI/CD and local dev workflows, bringing full API validation suites under 5 minutes and lifting test coverage on customer-facing services by ~40%.
  • Ran weekly cross-team technical reviews with 5–10 product and platform teams, maintaining 100% SLA compliance while unblocking downstream engineering work.
MicroStrategy
Senior Software Engineer Oct 2021 – Oct 2024
Software Engineer Feb 2019 – Oct 2021
Tysons Corner, VA
  • Engineered REST APIs in Java (Spring MVC) and PostgreSQL to provision AWS EC2–based customer environments, supporting automated deployments across hundreds of instances.
  • Automated cloud provisioning with Kubernetes, Terraform, Lambda, Step Functions, and SQS, cutting manual operational effort and accelerating environment setup.
  • Led architecture and prototyping for platform enhancements that improved reliability and cut AWS/Azure infrastructure costs by ~15% while supporting continued customer growth.
Earlier Experience
Software Engineering Intern — United States Department of Agriculture · Beltsville, MD · Sep 2017 – Aug 2018
Software Engineering Intern — Amazon Web Services · Seattle, WA · Jun – Aug 2017

$ cat contact.md

Contact