Senior Fullstack Engineer - AI

airSlate Inc.; Poland; Hybrid; PLN 260,000 - 420,000; Full time

Benefits offered by this job

Flexible work environment

Stock options

Professional growth & learning

Health and well-being benefits

Family-friendly culture

Charitable initiatives

Open communication

Job summary

airSlate Inc. is seeking a senior software engineer to own end-to-end features built around AI coding agents. You will design and validate context-deep specs, review generated code, and ensure production quality while maintaining documentation and ADRs.

The role spans a modern stack: PHP/Node.js/Golang with JavaScript/TypeScript/React, plus robust SQL and Docker usage. You will join the SignNow team, contributing to scalable, cloud-native software in a flexible remote/hybrid environment and

Qualifications

• 5+ years of commercial software engineering experience.
• Hands-on experience with AI coding agents in production environments, including context setup and validation.
• Proficiency in PHP, Node.js or Golang, and modern JS/TS/React stack.
• Strong SQL skills with relational databases (MySQL/PostgreSQL).
• Familiarity with Docker and cloud-native technologies, CI/CD, and AWS.
• Ability to document architecture and ADRs; excellent problem decomposition and prioritization.
• Fluent English, written and spoken.

Responsibilities

• Deliver features with AI coding agents as core implementation loop; write specs and tasks with context.
• Review agent-generated code for quality and production-readiness.
• Own features end-to-end: requirements, quality, tests, deployment, and monitoring.
• Improve team workflows with agents; define guardrails and context.
• Conduct code and documentation reviews to ensure consistency and quality.
• Participate in duty rotations: monitor production systems and incidents.
• Grow technically within a high-delivery engineering culture.

Skills

5+ years experience

AI coding agents

Fluent English

Task decomposition

Documentation & ADRs

Tools

PHP

Node.js

Golang

JavaScript

TypeScript

React

SQL

MySQL

PostgreSQL

Docker

CI/CD

AWS

Job description

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 - Sign Now, pdfFiller, DocHub, altaFlow, Instapage, and US Legal Forms - serve over hundreds of millions ofusers 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.

What you will be working on:

• 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

What we expect from you:

• 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.

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