Custom Software Development & Penetration Testing in Los Angeles, CA

QUANT LAB USA combines custom software engineering with hands-on penetration testing rooted in the MITRE ATT&CK framework — founder-led delivery, a modern stack, and code that survives a serious technical review. We build for LA the way LA buyers expect: predictable scope, predictable price, and an engineer who actually ships.

Los Angeles is the entertainment capital of the world, and entertainment is a software problem hiding behind a creative one. Studios, networks, agencies, post houses, and music companies across Burbank, Culver City, Hollywood, and Santa Monica run on a tangle of rights databases, royalty calculations, production schedules, talent and crew operations, and finance workflows that no single off-the-shelf product covers. Below that sits a thriving entertainment-tech and DTC layer — streaming-adjacent startups, creator tooling, ticketing, and direct-to-consumer brands — that lives and dies on Stripe-grade billing and clean subscription mechanics. And out in El Segundo and the South Bay, the aerospace corridor anchored by SpaceX, the broader space-launch ecosystem, and a deep bench of suppliers generates demand for unclassified ops, supplier, and data tooling.

Most generalist agencies in the LA market sell development hours. We sell senior engineering plus genuine offensive-security capability in the same shop. Active Directory abuse paths, lateral movement, ADCS certificate abuse, Kerberoasting, and web app exploitation are in-house, not a subcontracted line item — and every line of software we ship is reviewed against the same threat models we use on engagements. For an LA founder raising money, a studio vendor passing a customer security review, or an aerospace supplier under audit, that combination is the entire pitch.

Los Angeles sits three hours behind our Eastern HQ — we work your morning. Our late morning is your early morning and our late afternoon is your mid-morning, so there is a clean overlap window for standups and reviews; we run standups at 11am ET / 8am PT routinely. For engagements above roughly $25k we fly into LAX or BUR for an on-site kickoff afternoon — Santa Monica, Culver City, Burbank, Pasadena, or El Segundo as scope warrants. Pen testing engagements run from a secure remote infrastructure with strict source-IP allowlisting and authenticated client-side VPN tunnels for internal scope. Reports are delivered in two formats: a technical deliverable with reproduction steps and remediation detail for the security team, and a board-readable executive summary with a prioritized roadmap. Custom software builds are fixed-scope and fixed-price, with a weekly Friday staging URL and full handover of code and accounts at acceptance. Most LA engagements close inside 4–6 weeks from kickoff to final report.