Senior Full-Stack / Frontend Engineer

Senior Full-Stack / Frontend Engineer

Remote (CET ±4h) | 18-22k PLN net/month B2B

The Problem

Sales teams spend hours digging through news, LinkedIn, and databases looking for the right moment to reach out.

A company just raised funding. A VP just changed jobs. A competitor just expanded into a new market.

These signals exist - but finding them manually doesn't scale.

ZYNT surfaces buying signals automatically. We process thousands of sources, extract what matters, and deliver actionable intelligence in real-time.

The challenge:

Building the product that turns AI output into action. Real-time dashboards. Self-service configuration.

Multi-tenant architecture that works for enterprises.

Intelligence is only valuable if people can act on it - and bad UX means signals get buried.

What You’ll Build

You'll own the product experience - from database to dashboard.

In your first month:

• Walk through the codebase with the CPTO

• Join a customer call - understand how they actually use signals

• Ship your first changes to the signal dashboard

In your first quarter:

• Own the signal experience end-to-end (dashboard, filtering, detail views)

• Build self-service configuration - let customers set up their own monitored entities

• Ship the events monitoring interface

• Implement customer onboarding flow

Where we’re heading:

We want ZYNT to become the default way B2B teams discover opportunities - a platform that sales, marketing, and leadership all rely on daily.

You'll help us get there by making complex intelligence feel simple.

The Stack

• Frontend: Next.js 15, React, TypeScript

• Styling: Tailwind CSS, shadcn/ui, Figma

• Backend: Node.js, PostgreSQL, Prisma, REST APIs

• Auth: Clerk (multi-tenant, organization-scoped)

Who You Are

Must have:

• 3-5 years full-stack experience (portfolio matters more than years)

• 2+ years owning production systems

• Strong Next.js/React and TypeScript

• Backend experience - you can build APIs, not just consume them

• Above-average CSS/UI skills - you can take Figma to production with precision

• Eye for design and UX - you notice when something feels off

• Experience shipping complete features end-to-end (not just "contributing to")

• Fluent Polish and English (C1+) - our customers and team speak both

The attitude:

• Your first question is "How will the customer use this?"

• You take features from DB schema → API → UI → production

• You ship MVP, iterate on feedback, don't gold-plate

• You make product decisions, not just implement them

Nice to have:

• Multi-tenant SaaS background

• Startup or 0→1 experience

• Animation/micro-interactions (Framer Motion)

• Enterprise features (RBAC, audit logs)

• Data visualization experience

Red flags (not for you if):

• "I'm a frontend engineer" or "I'm a backend engineer" only

• You wait for pixel-perfect designs before starting

• "That's a product decision" (you should make product decisions)

Why Join Now

You’d be one of our first engineering hires.

• Early-stage, real ownership: Small team, big problems, no bureaucracy

• Shape everything: Product direction, component architecture, user experience - it's all being built

• Customers using the product daily: We're past the "will anyone use this" phase

• Visible impact: Your work directly enables everything else

We're looking for someone who wants to build something from scratch, not inherit someone else's codebase.

How We Work

• Ship daily. We deploy to production constantly

• Founder-level ownership. You own outcomes, not tasks

• Direct customer access. You’ll hear what users need firsthand

• Outcomes, not hours. We care what you ship, not when you’re online

Not For You If

• You prefer large, established teams with clear boundaries

• You need detailed specs before you can start

• You just want to code - we need you to think about business problems with us

The Details

• Compensation: 18-22k PLN net/month (B2B)

• Equity: Discussed during process

• Location: Remote, CET ±4 hours overlap required

• Office: Optional access to Warsaw space

• Start: February-March 2026

Interview Process

1. Intro call - mutual fit check

2. Technical conversation - your experience, our challenges

3. Practical task - real problem, reasonable scope

4. Founders conversation - culture, vision, your questions