Senior Fullstack Engineer - AI

PolandRemoteFull-timesenior

EngineeringFullstack Developer

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Quick Summary

Key Responsibilities

the shared context, rules, prompts, and guardrails that make everyone's agent output better, not just yours Conducting code and documentation reviews to ensure quality, share knowledge,

Requirements Summary

the shared context, rules, prompts, and guardrails that make everyone's agent output better, not just yours Conducting code and documentation reviews to ensure quality, share knowledge,

Technical Tools

EngineeringFullstack Developer

About airSlate

airSlate is a global SaaS technology company that develops no-code workflow automation, electronic signature, and document management solutions. Our award-winning products - SignNow, pdfFiller, DocHub, altaFlow, Instapage, and US Legal Forms - serve over hundreds of millions of users and more than one million customers worldwide, helping organizations of every size digitize processes, improve efficiency, and transform how they work.

We’re in an exciting phase of growth and transformation, with teammates in more than 20 countries across three continents and main hubs in the United States, Poland, Romania, Ukraine and Philippines.

At airSlate, we’re building value for customers and a culture where growth and innovation go hand in hand. We’re looking for people eager to shape products, scale a company, and thrive in a fast-moving environment.

About SignNow team:

We are a passionate and ambitious team of 100+ people on a mission to succeed with our award-winning signature solution – SignNow.

SignNow empowers over 28 million people at companies across the world to move fast with everything they need to send and eSign their documents. Increase productivity with document workflows, impress customers, and save money while maximizing ROI with SignNow.

Delivering product features with AI coding agents as your primary implementation loop: writing specs and context-rich tasks that carry architecture, team standards, existing patterns, and acceptance criteria, then iterating until the output meets the bar

Reviewing and verifying agent-generated code with the same rigor you would apply to a colleague's, catching the plausible-but-wrong before it reaches production

Taking full ownership of every feature end-to-end: clarifying requirements, understanding the problem, owning the quality and test coverage of what you ship, delivering to production, then monitoring behavior, performance, and regressions post-release

Improving how the team works with agents: the shared context, rules, prompts, and guardrails that make everyone's agent output better, not just yours

Conducting code and documentation reviews to ensure quality, share knowledge, and maintain consistency across the codebase

Participating in duty rotations: monitoring production systems, responding to incidents, keeping services available

Growing technically inside a team with a strong engineering culture, clean architecture, and a high bar for delivery

5+ years of commercial software engineering experience

Hands-on experience building production software with AI coding agents (Claude Code, Cursor, Codex or similar), including how you set up context, decompose work for an agent, and validate what comes back. Be ready to describe outcomes, not tool names

Practical commercial experience with PHP, Node.js or Golang

Hands-on experience with JavaScript, TypeScript, and React

Solid SQL and experience with relational databases (MySQL, PostgreSQL, or similar)

Working knowledge of Docker for application development and deployment

Practical experience with testing methodologies, and an opinion on what "sufficient coverage" means

At least basic knowledge of DevOps, CI/CD, AWS, and cloud-native solutions

Ability to write technical documentation using approaches like the C4 model and ADRs

Strong task decomposition and prioritization skills

Fluent English, written and spoken

What we offer

Flexible working environment - Our teams operate across the globe. We value in‑person collaboration in our hubs, but we also embrace remote and hybrid working. You can work from one of our offices in the United States, Poland, Romania or Ukraine, or remotely from many countries.

Competitive compensation and stock options - We offer salaries that reflect local market conditions and experience, plus a performance-based bonus system and stock options so you share in the company’s growth.

Professional growth and learning - We invest in your development through courses, conferences, and access to learning resources. We encourage career growth and internal mobility, supporting teammates who want to explore new opportunities within airSlate.

Health and well‑being - We provide comprehensive benefits tailored to each country, including health coverage, wellness programmes and access to fitness options. We also dedicate quarterly company-wide Mental Health Days, when everyone takes time off to rest and recharge.

Family‑friendly culture - Family life is part of who we are, and we embrace it in many forms. From flexibility for parents to our airSlate Junior Club for kids, to company-wide family days and our pet-friendly approach, we’re committed to making work and life easier to balance.

Giving back - We support charitable initiatives around the world through the airSlate Care programme. Our current focus includes humanitarian aid in Ukraine and other regions, matching employee donations and supporting causes chosen by our teams.

Open communication - We encourage transparent dialogue at all levels. From team discussions to company-wide Q&A sessions with our CEO, we make sure everyone has the chance to be heard and to influence how we grow.

It is airSlate's policy to comply with all applicable equal employment opportunity laws by making all employment decisions without unlawful regard or consideration of any individual’s race, religion, ethnicity, color, sex, sexual orientation, gender identity or expressions, transgender status, sexual and other reproductive health decisions, marital status, age, national origin, genetic information, ancestry, citizenship, physical or mental disability, veteran or family status or any other basis protected by applicable national, federal, state, provincial or local law. airSlate's policy prohibits unlawful discrimination based on any of these impermissible bases, as well as any bases or grounds protected by applicable law in each jurisdiction. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. airSlate is pleased to provide such assistance and no applicant will be penalized as a result of such a request. Pursuant to relevant law, where applicable, airSlate will consider for employment qualified applicants with arrest and conviction records.

Read our Recruitment Privacy Notice to Learn how we process your personal information.