Founding Engineer

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Tsenta (YC S26)

WebsiteLinkedInAll Job Openings

2 - 10 employees

Founded 2026

👥 B2C

☁️ SaaS

⚡ Productivity

B2C • SaaS • Productivity

Tsenta is a YC-backed startup that provides an automated job application agent. It monitors 50,000+ company career pages and ATS platforms (Workday, Greenhouse, Lever, Ashby and others), detects matching roles for a user's resume and preferences, tailors resumes and cover letters per role, fills application forms across many ATSes, submits applications on the user's behalf, and tracks application status and recruiter replies. Tsenta offers web, iOS, Android, iMessage, Chrome extension, and CLI/MCP integrations, and uses AI to rewrite materials and align keywords. Pricing tiers are usage-based monthly subscriptions with an initial free allotment.

📋 Description

• Build core product across the full stack — the job-matching engine, resume tailoring, the ATS auto-fill system, and the agent surfaces (web app, Chrome extension, iMessage/WhatsApp, and MCP server). • Reverse-engineer and reliably automate 19+ applicant tracking systems at scale, handling logins, every field type, and open-ended questions. • Ship LLM-powered features that read job descriptions, tailor application materials, and answer open-ended questions in each candidate's voice — accurately and within ATS constraints. • Own features end to end — from design and architecture through deploy, monitoring, and iteration. • Set the engineering culture and standards as one of the first hires, and help us recruit the rest of the team.

🎯 Requirements

• 3+ years building and shipping production software, ideally at an early-stage startup or in a role with broad ownership. • Strong full-stack ability — comfortable owning everything from the database to the UI, and biased toward shipping. • Experience with web automation, scraping, or browser tooling — or the appetite to go deep on it fast. • Hands-on experience building with LLMs and turning them into reliable, production-grade features. • High autonomy and ownership — you scope ambiguous problems, make calls, and drive them to done. • Excited to work in person, move fast, and help shape an early-stage company.

🏖️ Benefits

• Meaningful founding-level equity • Competitive salary