--- title: 'Backend QA Engineer, Berlin at Air Apps' canonical: 'https://feeny.ai/job/backend-qa-engineer-berlin-air-apps-berlin-a0td7w14bw6k' type: 'job' last_seen: '2026-09-06' --- # Backend QA Engineer, Berlin at Air Apps - **Company:** Air Apps - **Location:** Berlin, Germany - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-04-16 - **Last confirmed live:** 2026-09-06 - **Apply:** https://jobs.ashbyhq.com/airapps/a53612d9-0e9f-4645-b39a-2f1a282b2e31 ## Job description ## About Air Apps At Air Apps, we believe in thinking bigger and moving faster. We’re a family-founded company on a mission to create the world’s first AI-powered Personal & Entrepreneurial Resource Planner (PRP), and we need your passion and ambition to help us change how people plan, work, and live. Born in Lisbon, Portugal in 2018 and now with offices in both Lisbon and San Francisco we’ve remained self-funded while reaching over 100 million downloads worldwide. Our long-term focus drives us to challenge the status quo every day, pushing the boundaries of AI-driven solutions that truly make a difference. Here, you’ll be a creative force, shaping products that empower people across the globe. Join us on this journey to redefine resource management and change lives along the way. ## THE ROLE We are looking for a Backend QA Engineer to help ensure the reliability, performance, and scalability of our backend systems. In this role, they will focus on testing APIs, databases, and backend services while collaborating closely with engineers to maintain high-quality standards across our infrastructure. This is a fully onsite position, based at our office in Lisbon, where you will collaborate closely with cross-functional teams in person and contribute to a dynamic and fast-paced environment. We are open to support with relocation efforts. The ideal candidate has approximately 2–3 years of experience working with backend technologies such as Node.js and TypeScript and enjoys combining software development practices with quality assurance. They will contribute to test design, automation, API validation, and infrastructure review while helping maintain a strong quality culture within the engineering team. ## RESPONSIBILITIES - Design and execute tests for backend systems, including APIs, databases, and service integrations. - Validate API functionality and performance using tools such as Postman, Swagger, or similar platforms. - Test and verify database operations, queries, and data integrity in systems using PostgreSQL or similar relational databases. - Collaborate with engineering teams to review pull requests, ensuring code quality and test coverage. - Support the development and maintenance of automated tests for backend services. - Participate in reviewing backend infrastructure and identifying potential reliability or performance issues. - Document and track defects, test cases, and test results using test management tools such as TestRail or similar systems. - Work closely with developers and product teams to improve testing strategies and overall product quality. ## REQUIREMENTS - Approximately 2–3 years of experience working with backend technologies, testing, or software development in test roles. - Experience with Node.js and TypeScript in backend environments. - Familiarity with SQL databases, particularly PostgreSQL, and experience validating database queries and data integrity. - Experience testing REST APIs using tools such as Postman, Swagger, or similar API testing tools. - Understanding of backend testing practices, including API testing, database testing, and integration testing. - Familiarity with test management tools such as TestRail or comparable platforms is beneficial. - Comfort reviewing pull requests and backend architecture changes to help ensure quality standards. - Strong attention to detail, problem-solving skills, and the ability to collaborate with cross-functional teams. ## WHY JOIN AIR APPS? (LISBON) - Annual Bonus - Top-tier Health and Life Insurance for peace of mind. - Transportation Budget to support your commute needs. - Coverflex benefits package for meal allowances, well-being, and more. - Urban Sports Club membership to keep you active. - Meals 100% free at the office. - Pension Fund to support your long-term financial planning. - Annual Conference: an opportunity to meet the team, collaborate, and grow together. - Apple hardware ecosystem for work. ## DIVERSITY & INCLUSION At Air Apps, we are committed to fostering a diverse, inclusive, and equitable workplace. We enthusiastically welcome applicants from all backgrounds, experiences, and perspectives. We celebrate diversity in all its forms and believe that varied voices and experiences make us stronger. ## APPLICATION DISCLAIMER At Air Apps, we value transparency and integrity in our hiring process. Applicants must submit their own work without any AI-generated assistance. Any use of AI in application materials, assessments, or interviews will result in disqualification. ## About Air Apps ## Company Overview - **One-liner**: Air Apps develops a portfolio of AI-powered mobile and web applications designed to simplify everyday tasks, from translation and document scanning to fitness tracking and secure browsing. - **Entity Type**: Private (Bootstrapped) - **Headquarters**: San Francisco, California, USA (with a major office in Lisbon, Portugal) - **Founded**: 2018 - **Founders**: Filipe (surname not publicly available) & Janina Ferreira ## Core Business - **Primary industry/industries**: Mobile App Development & Publishing, Consumer Software, AI-powered Tools - **Target customers**: B2C (consumers globally); their apps target the general public for personal productivity, learning, health, and creativity. - **Mission or purpose statement**: "To build the world's most trusted collection of everyday apps and become the biggest app publisher on the planet... making people's lives easier." [airapps.co](https://airapps.co/about) ## Products & Services - **[Translate Now](https://airapps.co/)**: AI-powered translation app supporting 300+ languages. - **[Calculator Air](https://airapps.co/)**: AI-powered calculator for solving math problems with step-by-step help. - **[Scanner Air](https://airapps.co/)**: Document scanning, signing, and sharing tool. - **[VPN Air](https://airapps.co/)**: Secure and private browsing with unlimited VPN protection. - **[QR Code](https://airapps.co/)**: App for scanning, creating, and managing QR codes and barcodes. - **[Translator Keyboard](https://airapps.co/)**: Keyboard extension for instant translations across 60+ languages. - **The PRP (Personal Resource Planner)**: An AI-powered platform that integrates personal life data (health, tasks, finances) into a single dashboard. [airapps.co](https://airapps.co/) - **Other apps**: A portfolio of 30+ apps across Fitness, Productivity, Creative, and Learning categories. ## Market Standing - **Valuation/Market Cap**: Not publicly available (Bootstrapped). - **Key Metric**: **114M+** total downloads globally; **3 million** monthly downloads; **2.5M+** ratings & reviews; Average app rating of **4.7** stars. [airapps.co](https://airapps.co/) - **Notable Investors/Partners**: Bootstrapped (no venture capital). No external investors. - **Growth Signals**: - **Headcount Growth**: +22.9% year-over-year (from ~33 to 40 employees) [LinkedIn]. - **Job Posting Surge**: Active job postings increased by **+454.2%** year-over-year (currently 460+ open roles) [LinkedIn]. - **Geographic Expansion**: Opened a new office ("The Air Hub") in San Francisco in 2025, expanding from its original Lisbon base [jobs.ashbyhq.com](https://jobs.ashbyhq.com/airapps). - **Product Expansion**: Launching The PRP, a major new AI-powered platform. ## Competitive Advantages - **Bootstrapped & Independent**: No VC pressure, allowing long-term product focus and a strong commitment to user privacy ("We have never sold user data. We never will.") [airapps.co](https://airapps.co/about). - **In-House Development**: Every app is designed and built by the internal team, ensuring quality control and rapid iteration. - **AI-First Approach**: Actively integrating AI across its entire product portfolio to enhance functionality (e.g., AI translation, AI-powered calculators). - **Massive, Engaged User Base**: Over 114 million downloads and a high average rating (4.7 stars) demonstrate strong product-market fit and user trust. - **High Standards & Simplicity**: A core philosophy of "cutting, questioning, and cutting again" to ensure apps are simple and useful, not bloated. ## Strategic Focus - **Scale the App Portfolio**: Continue to grow its existing portfolio of 30+ apps and expand into new categories. - **Launch the PRP Platform**: A major strategic bet on becoming a central "Personal Resource Planner" that integrates all aspects of a user's digital life. - **Become the World's Largest App Publisher**: A stated ambition to scale up to become the biggest app publisher on the planet. - **AI Integration**: Deepening the use of AI across all products to improve user experience and create new capabilities. - **Talent Acquisition**: Aggressively hiring (460+ open roles) to support massive growth and the launch of new products. ## Why Work Here - **Culture**: Emphasis on simplicity, ownership, and high standards. Described as a "culturally diverse team" where "everyone contributes" and "takes responsibility." [airapps.co](https://airapps.co/about) [linkedin.com](https://www.linkedin.com/company/airapps). - **Remote/Hybrid Policy**: **Remote-first** with physical offices in Lisbon and San Francisco. The company offers a "flexible work schedule" and a "remote work program." [builtin.com](https://builtin.com/company/air-apps). - **Annual Team Gathering**: "The Air Conference" – a yearly all-hands meetup where the entire global team gathers in one place to build culture and plan the future. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/airapps). - **Perks & Benefits**: - Generous PTO, paid holidays, and paid sick days. - Health insurance and mental health benefits. - Family medical leave and generous parental leave. - Job training, conferences, and customized development tracks. - Wellness focus: offices have run clubs and encourage healthy habits. [builtin.com](https://builtin.com/company/air-apps) - **Engineering Culture**: High ownership, emphasis on building simple and reliable software, and a commitment to user privacy. The tech stack is likely modern and mobile-first, given the product portfolio. ## Sources 1. [airapps.co](https://airapps.co/about) 2. [airapps.co](https://airapps.co/) 3. [linkedin.com](https://www.linkedin.com/company/airapps) 4. [builtin.com](https://builtin.com/company/air-apps) 5. 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