iOS Engineer

Storio group

Make Your Mark as an Principal iOS Engineer at Storio group About the role You will join our Amsterdam based Browse and Manage App team. This team builds the storefront, product discovery, and account management experiences for our native mobile applications across all Storio Group brands. Your technical leadership will directly help customers find the best products for their special moments through high quality iOS features. As our iOS Principal Engineer, you will set the technical direction for the iOS platform within the team. You will champion technical quality, own the iOS architecture roadmap, and ensure the long term health of our codebase. You will collaborate closely with product and engineering teams in Amsterdam and London to make our native app experience best in class.

Polarsteps

Looking for a new adventure? You’ve come to the right place. We're an Amsterdam-based team of 90+ (and counting) with 25+ nationalities amongst us! A varied bunch of “Citizens of The World” with a wide range of skills and hundreds of thousands of kilometers under our travel belts. And we have something important in common (other than our very well-worn passports): We want to change the way people travel. And that's exactly what we're doing, with the travel app to plan, track, and relive trips in a smart and beautiful way. Polarsteps has over 20 million users already, but, for us, this is just the beginning. We have big plans for the future, and so we need even more talented and enthusiastic people to help us on our journey. We want to change the way people travel. And that's exactly what we're doing, with the travel app to plan, track, and relive trips in a smart and beautiful way. Polarsteps has over 20 million users already but, for us, this is just the beginning. We have exciting new features on our roadmap and we need a talented iOS Engineer to help us on our journey. Want to know more about us? Here you go. YOUR EXPEDITION: IOS DEVELOPMENT AT POLARSTEPS We’re a small team, doing big things. If you haven't seen our app yet, go ahead and check it out, you'll see that we care (a lot) about providing a seamless, top-quality user experience for every one of our travellers. And it is this that has got us ratings of 4.8* and 4.7* on the app stores (where we’ve been featured multiple times). But it doesn’t stop there, not only did Google create this awesome video about us but we’ve been mentioned in two of Apple’s WWDC keynote speeches. And we're one of the top 26 apps for 2026 according to Apple! We’ve got an impressive past but we’re even more excited for the future, and the impact you can make from day one is huge, with everything you ship affecting millions of users. Even with that in mind, we believe in truly giving our team members the freedom they need to craft to perfection while encouraging a practical mindset to avoid under or over-engineering mishaps. We are seeing an enthusiastic and accelerated growth of the travel industry, and with that comes both opportunities and growing pains (especially in the complex, multi-layered travel domain). So, if on top of the challenges inherent to feature development, you enjoy thinking about the performance and scalability aspects of a platform, you're in for a lot of fun with us.   YOUR ITINERARY What your journey at Polarsteps will look like day-to-day. You will: * Lead and mentor a team of highly qualified, high performing iOS engineers. * Through your leadership strengths, make a difference in creating a high performing team that is highly engaged and collaborative. * Partner with Jimmy, our iOS Tech Lead, to balance technical excellence with strong people leadership across the iOS team. * Work with Javi, Andrii, Orcun, Arne, Lieneke, Daniil, Rosa, Dmytro, Azat and Paulo (our iOS engineers) on all things related to our app. * Spend approximately 40% of your time leading our iOS discipline, and 60% in the role of a senior engineer working on our app. * Have daily interactions with product managers, designers, other engineers, and the rest of our team - we believe in a deeply collaborative environment. * Proactively improve our app's maintainability, resiliency, and extensibility, addressing technical debt when needed or even better, preventing it when it makes sense. THE EQUIPMENT IN YOUR BACKPACK What we’re hoping you’ll bring with you. * You’ve led teams of 4 or more engineers, for 2 or more years. * True “on the ground” experience with leading and mentoring engineers: helping your teammates grow, thrive, and do their best work, while keeping the team atmosphere collaborative and positive. * You’ve seen the good, the bad, the ugly and the beautiful side of people leadership, and you are excited to continue in that journey. * A pragmatic approach to problem-solving, and an absence of fear when it comes to tackling big challenges in UI, architecture, or refactoring that 5-year-old piece of legacy code. * A strong iOS development background, we work with Swift, but we still have some legacy Objective-C code, so we would love it if you are also familiar with that. * Extensive experience with large apps published in the App Store. * In-depth knowledge of UIKit, SwiftUI and experience building complex user interfaces. * Experience with writing and debugging multithreading code. We use GCD, Combine, and the latest Swift Concurrency. * Experience using Xcode instruments to optimize app performance and memory consumption. * Experience with setting up and maintaining CI/CD pipelines. We use Fastlane and Github actions. * Experience leveraging AI tools (e.g., Claude Code, ChatGPT Codex) to improve development speed, code quality, and debugging efficiency. 1ST CLASS EXTRAS Some cool things to make the journey extra sweet. * A yearly free flight or train ride to a random location! Give our Teleporter a spin here. * A shiny new MacBook to work your magic on. * Hybrid working, our way. Work from home and the office, we ask everyone to be in the office 2 days a week. It’s how we stay flexible, focused, and meaningfully connected in person. * An extensive home office set-up, everything from noise-canceling headphones to a standing desk. * 30 days of vacation (for adventures or sitting on the couch, it's up to you) * Two paid Culture Days for days that are important to you but not recognized by the official Dutch calendar.- * The option to switch up your zoom background by working from another country for up to 8 weeks a year. * A personal development budget for that curious mind of yours! * A pension plan to help you save for those around-the-world retirement trips. * Delicious daily team lunches. * Awesome monthly parties, as well as team trips away. * A lively office in downtown Amsterdam, with travel costs reimbursed. * Free Polarsteps Travel Books to contain all your far-flung adventures. At Polarsteps, we believe the best products are built by people as diverse as the travelers using our apps! That's why we specifically encourage people underrepresented in the tech industry to apply for a role with us. Because we believe that diversity, be it age, race, sexual orientation, physical ability, ethnicity, or gender identity, makes both the world and the workplace better. Think this is the path for you? Find out more about how we hire.

ThreatFabric

YOUR MISSION Position: Full-time | 40 hours per week Location: Amsterdam, Netherlands | Work From Home (2–3 days per week in the office) Salary Range: 95.000,- 115.000,- annually About the Job The Mobile SDK Lead combines hands-on software engineering with technical leadership, helping shape the future of ThreatFabric's mobile security platform. The overarching goal is to ensure the Mobile Engineering team delivers scalable, secure and innovative solutions that enable financial institutions worldwide to protect their customers against fraud, malware and emerging cyber threats. As a Mobile SDK Lead at ThreatFabric, you play a key role in guiding the technical direction of our Android and iOS SDKs while remaining actively involved in development. You will work closely with Product, Research, Threat Intelligence and Engineering teams to translate innovative fraud detection capabilities into high-quality mobile security solutions. We are looking for a strong Android engineer with leadership experience who can provide technical guidance, support architectural decisions and help the team grow. Deep Android expertise is essential, while experience with iOS development is considered a strong plus. The Mobile Engineering team currently consists of four senior engineers: two Senior Android Engineers and two Senior iOS Engineers. As Mobile SDK Lead, you will serve as the technical lead for the team, helping drive architectural decisions, maintain engineering standards, mentor team members and ensure alignment across both mobile platforms. This role includes people management, you will play a key role in shaping the team and development of the teammembers alongside of steering technical direction and success of the Mobile Engineering team. Responsibilities Your key responsibilities will include: * Designing, developing, testing and maintaining ThreatFabric's Android SDKs. * Providing technical leadership for a team of four senior mobile engineers across Android and iOS platforms. * Acting as the primary technical authority for Android SDK development within ThreatFabric. * Supporting the team in making architectural and technical decisions. * Reviewing code and ensuring high-quality engineering standards are maintained. * Coaching and mentoring engineers to support their technical growth and development. * Collaborating closely with Product, Research and Threat Intelligence teams to deliver innovative fraud prevention capabilities. * Translating business and customer requirements into scalable technical solutions. * Driving continuous improvements in code quality, development processes and engineering practices. * Developing or improving the tools and frameworks used to deliver ThreatFabric's commercial services. * Monitoring, analyzing and improving SDK performance, stability and maintainability. * Supporting troubleshooting efforts and helping resolve complex technical issues. * Contributing to sprint planning, estimations and technical roadmap discussions. * Staying up to date with Android platform developments, security trends and emerging technologies. What We Offer * A 12-month employment contract with the intention to extend. Subject to mutual satisfaction, this may lead to a permanent position. * A competitive salary, between 95,000 - 115,000 € per year annually including holiday allowance. * 25 holidays per year. * A pension scheme. * 8% holiday allowance (included in annual salary). * A stimulating and supportive work environment that encourages growth and development. * The opportunity to make a meaningful impact in a rapidly growing tech company. * Flexible remote / hybrid work-from-home options to promote work-life balance. * Flexible working hours. * A personal Growth and Development Budget * Active ThreatFabric events and FitFabric bootcamps. * Active knowledge-sharing huddles. YOUR PROFILE Skills & Competencies Technical skills * Bachelor's degree in Computer Science, Software Engineering or a related field. * Extensive experience with Android development using Kotlin and Java. * Proven experience building and maintaining Android SDKs, libraries or complex mobile applications. * Strong understanding of Android architecture, performance optimization and mobile development best practices. * Proven experience acting as a technical lead within engineering teams. * Experience reviewing code and maintaining engineering standards. * Strong understanding of software architecture principles and design patterns. * Experience working in Agile environments (SCRUM / Kanban). * Familiarity with cybersecurity, fraud prevention or mobile security concepts is considered a strong advantage. * Experience with iOS development and Swift is a plus. * Fluent in English, written and spoken. Leadership skills * Ability to guide engineers and drive technical decision-making. * Experience acting as a technical lead for senior engineering teams. * Ability to influence technical direction without direct managerial authority. * Comfortable leading discussions on architecture, engineering standards and technical strategy. * Experience mentoring senior engineers and fostering knowledge sharing across teams. * Leads by example through technical excellence, ownership and collaboration. Creativity and innovation * Able to come up with creative and innovative ideas and voice them in a way they can be applied and implemented. * Continuously seeks opportunities to improve products, processes and engineering practices. Problem solver * Able to spot, analyze, discuss and solve issues. * Voices in a clear way how solutions are reached and the steps taken. * Knows how to differentiate between what is important and what is less important. * Thinks of the work done from a functional, end-user perspective to deliver the most value. * Strong analytical mindset and structured approach to problem solving. Communication and interpersonal skills * Explains complex technical issues clearly to both technical and non-technical audiences. * Strong at cooperating in a team and delivering results together. * Shows tact and organizational sensitivity to bridge possible conflicting interests. * Approachable, good listener, communicates with a positive intent to understand the needs of others and is empathetic towards team members. * Comfortable coaching and mentoring engineers while providing technical guidance. Continuous improvement * A continual effort to improve ongoing workplace practices and products. * Continuously seeking opportunities to improve efficiency and quality of product delivery. * Has a critical attitude which translates into robust and sustainable improvements. Information Security, Business Continuity & Privacy * Has a positive and active attitude towards information security, business continuity and privacy. * Engages in awareness sessions and stays up to date on relevant information (e.g. Teams and Confluence). * Actively reports security incidents to the Risk Officer or supports in solving security incidents when expertise is required. * Acts as a role model and adheres to all applicable policies regarding information security, privacy and business continuity. WHY US? About ThreatFabric At ThreatFabric, we're not just shaping the future of cybersecurity - we're defining it. With our headquartered in the vibrant city of Amsterdam, ThreatFabric stands at the forefront of combating online fraud, mobile malware, and threat intelligence.   Costly online scams, fraud and malware attacks are rampant. Victims’ life savings are stolen, but so are their confidence and trust. On top of this, financials' brand and reputation are damaged. Many lack online visibility to trigger prompt reaction, and the industry faces regulatory reimbursement pressure.   This is why ThreatFabric provides web and mobile security: scam, fraud and malware detection and prevention, and threat intelligence to be proactive. We help the biggest financial brands protect their customers and their reputation in a world where attacks escalate, and trust erodes.   Join Our Dynamic Team Ready to dive into the heart of innovation? Our team is a melting pot of talent, passion, and expertise from all corners of the globe. Behind ThreatFabric's success lies a diverse ensemble of technical experts, data scientists, and thought leaders united by a passion for innovation. With a global perspective and a collaborative spirit, our team leverages innovative technology and thousands of data points to deliver security solutions.   As a scale-up, we embrace a scale-up mentality where flexibility, adaptability, and a dynamic approach are essential.   Our Core Values At ThreatFabric, our culture is defined by three guiding principles: * One Team: Collaboration fuels our success as we work together to tackle complex challenges. * Continuous Excellence: We're committed to pushing boundaries and exceeding expectations in everything we do. * Customers at the Heart: Our customers are not just clients - they're partners. Their success is our priority. Interested? Are you as excited about this opportunity as we are? We can't wait to hear from you! Apply through this Personio link, and let's make innovation happen together! We aim to fill this vacancy in Q3 2026.   What's next? So, you've hit send - what happens now? First, we'll do a screening to ensure we're a good match. If all goes well, you'll be invited for an initial chat with us. Then, there's a second interview, and we may include an assessment to better understand your skills. Ready to take the plunge?   Please note: Pre-employment screening is part of our selection process. We do not accept unsolicited resumes from recruiters or employment agencies.