Keep moving, don't settle.
I build systems that run without me watching. At Tsenta (YC S26) I own the backend that submits 200,000+ job applications a day across 25+ ATS platforms — Workday, Greenhouse, Lever, Ashby — most of them reverse-engineered from network traffic, because they have no API worth asking for.
Before that I was CTO at Percify, which went from an empty repo to an acquisition in ten months.
I care about the boring parts: uptime, cost per request, and whether the thing still works at 3am.
Experience
TsentaYS26
Founding Software Engineer · YC S26
Mar 2026 — Present
- •Lead engineer owning backend infrastructure and ATS integrations across 25+ platforms — Workday, Greenhouse, Lever, Ashby — processing 200,000+ applications daily at 99%+ reliability.
- •Architected the distributed cloud infrastructure and reverse-engineered ATS network requests to support sub-second form filling with zero data loss.
- •Built the iOS and Android apps plus a Chrome extension with 1,000+ active users, cutting time per application from 15 minutes to 30 seconds.
- •Designed AI-driven form filling and resume optimisation cloud workers with sub-second latency; orchestrated the deploy pipeline, cutting ops overhead 40%.
- •Optimised backend systems for a 40% cost reduction — $50K+ monthly — while holding 99.5%+ uptime in production.
Percify
Chief Technology Officer · Acquired
May 2025 — Mar 2026
- •Led technical vision as CTO, architecting an AI-first SaaS platform from an empty repo to acquisition in 10 months.
- •Designed a modular monorepo that cut deployment time from 2 hours to 15 minutes; shipped 50+ features with 95% pre-production bug catch.
- •Built an AI content generation pipeline handling 1,000+ daily requests, reducing content costs 60% at 98%+ quality.
- •Architected the Stripe billing system and real-time analytics over 100M+ daily events at 99.9% uptime.
P
Pronexus Tech
Founder & CEO
Oct 2022 — Present
- •Founded and led a cross-functional team that launched 10+ web and mobile applications.
- •Delivered scalable SaaS and enterprise solutions on React, Node.js and AWS with a 90% client satisfaction rating.
- •Built deployment pipelines and engineering standards that doubled delivery speed while keeping codebases secure and maintainable.
Selected Work
Skillment2024
Completed
AI proctoring and live face detection for remote technical assessments.
Next.jsExpress.jsPostgreSQLWebRTCTensorFlow
SEOScale2023 — 2024
Archived
Automates satellite pages, backlinks and programmatic content that compound over time.
GoMicroservicesGPT-4PostgreSQLStripe
Completed
AI scam and phishing detection across web, email, SMS and social. National hackathon winner.
Next.jsReact NativeExpress.jsPostgreSQLOpenAI
About
Me
Suhaib S.Z
Backend and systems engineer in Bengaluru. I started writing code in 2020 and spent the years since learning how things break at scale.
Right now that's Tsenta (YC S26) — 200K+ applications a day, 25+ reverse-engineered ATS integrations, sub-second form fills, 99%+ reliability. Before Tsenta I was CTO at Percify and took it from an empty repo to an acquisition in ten months.
Along the way: won the NammaSuraksha national cybersecurity hackathon, ran VisionX (3,000+ students, 50+ events with Google and Microsoft), moderated Once UI, and shipped Gitjet — a Git CLI that picked up 500+ stars.
Still at Presidency University, finishing CS in 2027.
Skills
GitHub Activity
Thoughts
Cost per request is a design constraint, not a cleanup task
Going from CTO to founding engineer on purpose
Automation the user can watch
Building production systems while still in college
Writing
The tools I actually use to run 200K applications a day
Sep 5, 2026Not a 'my setup' post. These are the tools that are load-bearing in a backend that reverse-engineers 25+ ATS platforms — traffic capture and replay, parallel coding agents, queues, and the observability that makes 2am fixes boring.
How I reverse-engineer an ATS
Sep 2, 2026Twenty-five recruiting platforms, almost none of them with a usable API. Here's the actual method: capture one real submission, find the state, rebuild the sequence, and make sure one platform breaking never takes the others down.
Why I keep choosing startups
Aug 24, 2026Three companies in four years — a studio I founded, a platform I ran as CTO through an acquisition, and a YC company where I'm a founding engineer. The reason isn't the upside. It's the feedback loop.
Stack I use
Technologies I work with to build products that solve real problems
If you've read this far, you might be interested in what I do.
"
"Move fast with stable infrastructure."
— Mark Zuckerberg