Senior Full-Stack Developer

Zohorecruit; Polska; Hybrid; PLN 466,000 - 699,000; Full time

Benefits offered by this job

Remote-First Culture

Flexible Schedule

Unlimited Paid Time Off

Parental Leave

Room to Grow

Professional Development

Quarterly Performance Bonuses

Paid Referral Program

Health & Fitness Reimbursement

Job summary

Fountain Forward, a Houston-based internet marketing agency, seeks a Senior Full-Stack Developer to lead the client portal's design, build, and launch. You will mentor four junior developers, own architecture, and raise the technical bar across the team.

The role focuses on strong Next.js/TypeScript frontend, Python/FastAPI backend, and data pipelines with Postgres, Redis, and BigQuery. Remote-friendly, full-time, with a clear path in a fast-moving agency setting.

Qualifications

• 5+ years building production web apps, with at least 2 years in senior or lead roles.
• Strong proficiency in Next.js and TypeScript.
• Solid backend experience with Python and FastAPI.
• Experience with Postgres, Redis, and BigQuery.
• Mentoring junior engineers and leading small teams.

Responsibilities

• Own the end-to-end technical delivery of the Fountain Forward client portal, from architecture to production.
• Lead, mentor, and manage a team of 4 junior developers through code reviews, pairing, and planning.
• Design scalable backend services in Python (FastAPI) and a performant Next.js frontend.
• Architect data flows across Supabase, Redis, and BigQuery for reliability and cost efficiency.
• Set engineering standards: testing, CI/CD, code quality, observability, and security.

Skills

Mentoring

Team leadership

Next.js

TypeScript

Python

FastAPI

PostgreSQL

Redis

BigQuery

CI/CD

Tools

Supabase

Redis

BigQuery

gRPC

tRPC

Protocol Buffers

Job description

• The entire application process must be completed in English. Fluent written and spoken English is required and will be evaluated.
• Applicants must be independent freelancers, not represented by another agency, and currently based outside the United States.

WHO ARE WE? FOUNTAIN FORWARD

We are a hyper-motivated crew of internet marketing experts based in Houston, Texas. We're on a mission to provide truly profitable data-driven marketing solutions, primarily for The Automotive industry.

We love working together to accomplish one thing: persuade people to do business with our clients, and do it more often. Seeing our clients make more money and collaborating together to accomplish their goals is what drives us to slam down a couple of espressos every morning and fire up our brain cells.

Purpose

Fountain Forward is hiring a Senior Full-Stack Developer to lead the design, build, and launch of our client portal while mentoring and managing a team of four junior developers. This role is hands-on: you will ship code, own architecture decisions, and raise the technical bar of the team. Definitions & Abbreviations

Client Portal: Fountain Forward's customer-facing web application providing dashboards, reporting, and self-service tooling

RPC: Remote Procedure Call framework used for typed, high-performance service-to-service communication

Responsibilities

Own the end-to-end technical delivery of the Fountain Forward client portal, from architecture to production.

Lead, mentor, and manage a team of 4 junior developers through code reviews, pairing, and technical planning.

Design scalable backend services in Python (FastAPI) and a performant Next.js (TypeScript) frontend.

Architect data flows across Supabase (Postgres), Redis, and BigQuery, ensuring reliability and cost efficiency.

Set engineering standards: testing, CI/CD, code quality, observability, and security best practices.

Collaborate with product, data, and leadership to translate business goals into technical roadmaps.

Requirements

Required Experience

5+ years building production web applications, with at least 2 years in a senior or lead role.

Strong proficiency in Next.js and TypeScript, including App Router, server components, and modern React patterns.

Solid backend experience with Python and FastAPI, including async programming and REST/RPC API design.

Hands-on experience with Postgres (Supabase a plus), Redis for caching and queuing, and BigQuery for analytics workloads.

Familiarity with optimization and RPC frameworks (e.g., gRPC, tRPC, Protocol Buffers, or equivalents).

Proven track record of mentoring junior engineers and leading small teams.

Comfort with cloud infrastructure, CI/CD pipelines, and production monitoring.

Nice to Have

Experience with data-heavy or analytics-facing client portals.

Background in performance optimization at scale (query tuning, caching strategies, frontend performance).

Exposure to event-driven architectures and background job processing.

Previous experience in an agency, consultancy, or fast-moving product environment.

How We Work

• Freedom and flexibility. We’re a team working from around the world. That is, as long as they show up on our weekly calls, do their job correctly, and have a good sense of accountability.
• Autonomy and ownership. Working on a distributed team means you don’t have someone micromanaging you or looking over your shoulder to make sure you’re getting things done. We’re a team of do-ers who take full ownership for their results.
• ABe helpful and dedicated. We help our clients be successful. We help our prospects get the right information and make the right decision whether or not it includes our services. We help our team members reach their full potential.

What We Offer

• Technical ownership of a flagship product from day one.
• A clear leadership path with a team to grow and develop.
• Modern stack, pragmatic processes, and fast decision-making.
• Competitive compensation aligned with seniority and impact.

The Perks!

• Remote-First Culture: Work from home—or anywhere in the world. We value results, not where you log in from.
• Flexible Schedule: We offer flexibility in your daily schedule (within reason) to help you do your best work while maintaining a healthy work-life balance.
• Unlimited Paid Time Off: Enjoy an unlimited vacation policy with just two weeks’ notice and manager approval. We also offer paid sick days because your well-being matters.
• Parental Leave: We understand the importance of supporting our team members during significant life events. Our maternity and paternity leave policy ensures you can prioritize your growing family without added stress.
• Room to Grow: We’re a fast-growing company with massive opportunities for upward mobility. As we grow, you grow with us.
• Professional Development: Get access to training in digital marketing, advertising, and leadership to sharpen your skills and advance your career.
• Quarterly Performance Bonuses: Earn bonuses based on your performance and contributions to the company’s success.
• Paid Referral Program: Earn rewards for referring great talent to join our team!
• Health & Fitness Reimbursement (upon tenure): Get support for health insurance or a gym membership—because your well-being matters.

Note:This is a full-time, 40-hour-per-week contract position structured as a 6-month renewable contract, with renewal based on business needs and performance.