Senior Quality Assurance Engineer

Trading 212

OUR MISSION IS TO ENABLE EVERYONE TO BUILD WEALTH We reinvent how trading and investing work by creating exceptional products people love. Fostering a culture of excellence and high velocity is the key to our success. Today, we serve over 5 million clients, with more than €30 billion in assets under management - a testament to the scale and trust we’ve built in just a few years. WHAT YOU’LL DO * Own the quality assurance tasks for multiple projects, ensuring that the software meets the highest standards of quality and reliability * Actively participate in design and requirements reviews to ensure testability and usability of features and products * Lead testing efforts, including developing and maintaining automation frameworks and scripts * Plan, implement and execute testing tasks in different product areas - DB, integration, functional, UI/UX * Analyse test results to identify areas for improvement and recommend process changes as needed * Provide technical and process mentorship to less experienced colleagues * Work in compact, autonomous teams with short release cycles - we rely on agile, independent teams of sharp and driven people with just the right amount of processes to steer off anarchy and not sacrifice velocity WHAT YOU NEED TO HAVE * 5+ years of experience in software quality assurance, with a focus on automation testing * Strong understanding of software testing concepts, methodologies, and tools * Strong programming skills in at least one programming language (Python, TypeScript, Java, etc.) * Experience with test automation frameworks and tools (e.g. Playwright, Selenium, Appium, Pytest, TestNG, etc.) * Experience with API testing tools such as Postman, SoapUI, or similar * Strong RDBMS knowledge * Familiarity with agile development methodologies such as Scrum or Kanban * Strong analytical and problem-solving skills * A very good command of English and excellent communication skills * Passion for quality assurance   NICE TO HAVE * Bachelor's degree in Computer Science, Information Technology, Mathematics, or a related field * Experience with testing microservices and distributed systems * Experience in testing mobile applications * Experience with NoSQL DB * Experience with Event Stream Processing platforms   WHAT WE OFFER * Challenges that will help you grow and realise your potential really fast * Opportunity to make a big Impact - you'll be involved in developing cutting-edge services used by millions of investors to build wealth * Work with smart, spirited, helpful, high-performing colleagues toward a common goal * Appreciation for your talent and ideas * Generous remuneration package including annual bonuses * Excellent social benefits package, including private health insurance, sports card and 25 days of paid vacation per year * Delicious treats and a spacious game room Are you ready to accelerate your career with us? We'd love to hear from you! We process applicant data confidentially and in accordance with applicable data protection laws. We may use AI-powered tools to help review applications, but all hiring decisions are made by our human recruitment team. Where required by law, we rely on your consent to use these tools. You may withdraw this consent or exercise your data protection rights at any time by contacting us.

Ultralytics

About Ultralytics: At Ultralytics, we commit to relentless innovation in the AI space and seek team members who resonate with our ambition to produce the world's best YOLO AI models. If you're obsessed with AI, eager to make an impact on the world, and thrive in dynamic, high-intensity environments, we invite you to apply for a position on our team. 🌎 Where and how you can work This full-time Senior Quality Assurance Engineer position is based in our Ultralytics office in Shenzhen, China, with a hybrid model of 3 days in-office and 2 days remote. 🚀 What you'll do As a Senior Quality Assurance Engineer at Ultralytics, you will help ensure the quality, reliability, and performance of the Ultralytics Platform and our YOLO-powered workflows and APIs. Key responsibilities include: * Designing and maintaining automated test suites for our backend services, web UI, and APIs using TypeScript and tools like Playwright. * Leading end-to-end and browser-based testing strategy for our frontend using Playwright Test. * Writing and maintaining API and integration tests for Next.js API routes, server components, and serverless deployments on Vercel. * Validating data integrity and edge-case behavior across workflows that touch MongoDB, training pipelines, and inference services. * Owning test infrastructure within CI/CD using GitHub Actions, improving test reliability, parallelization, and signal-to-noise. * Establishing testing patterns and best practices across a Turborepo monorepo with multiple apps. * Mentoring junior engineers on testing strategies, code review, and quality-first development. * Collaborating with Engineering and Product to clarify requirements, define acceptance criteria, and catch issues early. * Contributing to internal QA documentation, test plans, and release readiness checks. Your attention to detail and willingness to learn will be essential in supporting Ultralytics' mission of delivering top-tier machine learning tools and models to the community. 🧠 Skills and experience * 5+ years of experience in QA, test automation, or software engineering, with strong proficiency in TypeScript, Python, or both. * Deep expertise with Playwright for browser automation and end-to-end testing. * Solid understanding of API testing (REST/JSON), backend integration testing, and server component testing patterns. * Experience with modern web stacks including Next.js, React, TypeScript, serverless deployments (Vercel), and cloud infrastructure (GCP). * Proficiency with CI/CD systems (especially GitHub Actions), test gating, and pipeline optimization. * Experience working in monorepo environments with tools like Turborepo and Bun. * Familiarity with MongoDB and database testing strategies. * Proven ability to establish testing standards and mentor team members. * Strong problem-solving skills and a track record of improving quality processes in fast-paced environments. * Clear communication and the ability to collaborate across teams. 🌟 Cultural fit Ultralytics is a high-performance environment for world-class talent obsessed with achieving extraordinary results. We operate at a relentless pace, demanding exceptional dedication and an unwavering commitment to excellence. Our team thrives on audacious goals and absolute ownership. This is not a conventional workplace. If your priority is predictable comfort or a standard work-life balance over the relentless pursuit of progress, Ultralytics is not for you. We seek driven individuals prepared for the profound personal investment required to make a defining contribution to the future of AI. 💰 Compensation and benefits * Competitive salary: Highly competitive based on experience. * Equity packages: Participate directly in our company's growth and success. * Hybrid flexibility: 3 days per week in our brand-new office — 2 days remote. * Generous time off: 24 days vacation, your birthday off, plus local holidays. * Flexible working hours: Tailor your working hours to suit your productivity. * Tech: Engage with cutting-edge AI projects. * Gear: Brand-new Apple MacBook Air/Pro, Apple Studio Display, and AirPods Pro 3. * Team: Become part of a supportive and passionate team environment. What we offer: Cutting-Edge, Next-Generation AI Computer Vision Technology: Contribute to building cutting-edge computer vision AI models based on the YOLO framework. Impactful Work: Shape the future of AI-powered solutions that transform industries. Collaborative Culture: Join a talented and passionate team that values open communication and innovation. Ultralytics Handbook Comprehensive guide to our company's mission, vision, values, and operational practices. This handbook is designed to provide key insights and resources for our (future) team members, collaborators, and community to align with Ultralytics' core principles. Link: https://handbook.ultralytics.com/ Ultralytics is an equal opportunity employer committed to building an inclusive workplace. We believe that everyone should be able to bring their whole selves to work, and we do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability, or any other legally protected status.

ZEAL Network

ZEAL Network SE is an international group shaping the future of digital lotteries and dream-driven experiences. As Germany’s leading online lottery provider through LOTTO24 and Tipp24, and a partner of Spain’s ONCE, ZEAL combines innovation, technology, and entertainment to inspire millions of customers. With ventures such as Freiheit+, Traumhausverlosung, Traumautoverlosung and ZEAL Ventures, the company also invests in new business models and emerging e-commerce brands. Driven by a diverse team of 350+ professionals, ZEAL fosters a collaborative, ambitious culture focused on turning dreams into reality. As a (Senior) Quality Assurance Engineer (f/m/d) in our Games Production Team, you will ensure the quality, functionality, and security of our growing portfolio of slot games, instant-win games, and scratchcards. Your work plays a critical role in delivering a reliable and enjoyable experience for players, while also upholding regulatory compliance and safeguarding the integrity of our gaming platform. You’ll help establish and continuously improve QA practices that make our games robust, testable, and ready for release in regulated markets.   YOUR TASKS: * Design, build, and maintain automated test suites tailored for slots, instant-win games, and scratchcards, while performing manual testing during development and release phases. * Define and evolve test strategies that address the unique challenges of game testing — including animations, UI responsiveness, game state complexity, and random outcomes. * Collaborate with Game Developers, Game Designers, and Artists in a creative and agile environment. * Maintain structured test documentation, including test plans, bug reports, and regression checklists. * Execute cross-device and cross-browser testing to validate performance, consistency, and responsiveness across platforms. * Ensure compliance with regulatory standards, and support certification-related QA tasks such as preparing test evidence or assisting with audits for relevant jurisdictions (especially Germany). Prior knowledge is a plus, but can also be acquired on the job. * Advocate for a player-first quality mindset, helping the team prevent critical issues that could impact the game experience or platform reputation.   WHAT YOU OFFER US: * Practical experience in testing online games, ideally including slot games, scratchcards, or instant-win mechanics. iGaming industry experience is highly desirable. * A solid understanding of game testing challenges, including randomness, animations, math models, and edge-case scenarios. * Familiarity with basic probability and mathematics used in slot game design (e.g., RTP, volatility, win frequency) is a strong plus. * Proficiency with Playwright and TypeScript or similar frameworks for frontend automation. * Experience in manual exploratory testing—you know how to think like a player and uncover hidden issues. * Understanding of QA standards and compliance requirements for regulated markets (e.g., Germany, UK, MGA). * Strong collaboration skills and a proactive mindset—you’re ready to take ownership of quality in a fast-moving team. * Strong English skills are required for collaboration within the team. * Fluency in German is a nice-to-have.   WHAT WE OFFER: * State-of-the-art technologies and an agile environment (Check our Tech Radar: https://lotto24.github.io/tech-radar/) * A modern, dynamic culture grounded in the success of a leading-edge e-commerce company. * A talented team of ambitious, like-minded colleagues where your knowledge and ideas truly make an impact. * Ongoing personal growth, supported by an annual development budget of €1,500 to invest in your professional development. * Trust and autonomy, no micromanagement, just confidence in your ability to deliver and excel. * Flexible work options with a hybrid setup focused on results. * Unlimited vacation days in addition to your yearly 30-day vacation allowance. * Opportunity for workations abroad using our WorkFlex tool. * Monthly mobility allowance of €30 to use on the mobility option of your choice (e.g., the Deutschlandticket), plus access to a company bike leasing program. * Company pension scheme, provided in partnership with Degura, to support your future financial security. * Subsidized EGYM WELLPASS membership, with a contribution of only €25 per month, giving you access to a wide range of gyms and sports options across Germany. * Quarterly company events, along with regular team activities and informal gatherings, a favorite being our Healthy Tuesday lunches or Treat Thursdays in the office!   Sounds exciting? Great! We're looking forward to receiving your online application.