We’re looking for a Senior II iOS Engineer to join our Marketplace Security domain. The domain covers registration and login, preventing malicious accounts, and protecting member accounts from takeover.

You’ll join a dedicated anti‑bot team that focuses on understanding and combating bot activity and abusive automation on Vinted. The team works at the intersection of marketplace, engineering and security, using both in‑house solutions and carefully selected third‑party tools.

This is a greenfield, a discovery‑heavy space. We’re still defining how we measure and tackle bot activity across Vinted, and you’ll play a key role in shaping that on iOS.

• Be the go‑to iOS engineer for the anti‑bot area in Marketplace Security
• Design and implement iOS capabilities to detect and mitigate bots and abusive automation
• Implement and maintain iOS‑side instrumentation and signals that feed our bot metrics and detection systems
• Build and own shared iOS frameworks / SDK‑like components that other iOS teams can integrate for consistent bot protections
• Work closely with mobile, backend, data, product and security peers to understand new bot patterns and respond effectively
• Balance strong protection with a smooth member experience, as well as privacy and legal constraints
• Use feature flags, rollouts and metrics to release changes safely and learn from real‑world impact

• You have strong experience building and maintaining complex iOS apps in Swift
• Experience building internal iOS frameworks or SDKs used by multiple teams (stable APIs, versioning, deprecation strategies)
• You care about engineering quality: testing, performance, observability and clean architecture
• Experience with incident response on mobile – working with feature flags, staged rollouts and fast collaboration with backend/security teams
• You’ve operated at a Senior II level – leading initiatives, making platform‑level decisions and mentoring other engineers
• You’re comfortable working in metrics‑ and data‑driven environments, not just shipping features
• You have a track record in discovery‑heavy and greenfield work where the problem and solution space evolve over time
• You keep an eye on new AI‑driven developer tools and help your team decide which are worth adopting
• You communicate clearly in spoken and written English

Nice to have

• Experience in security, fraud/abuse prevention, trust & safety, or other risk‑heavy products
• Experience with code obfuscation, anti‑tampering techniques, or app integrity checks on iOS

• The opportunity to benefit from our share options programme
• 25 working days of holiday
• Access to all the tools & tech needed for work
• Home office support: we provide IT workstation equipment and a personal budget of up to €540 for home workplace furniture
• Private health insurance
• Mental and emotional health support through the Mindletic app
• Frequent team-building events
• A personal monthly budget for shopping on Vinted
• The opportunity to spend up to 90 days per year - 21 of which can be spent working outside of the EU - on workation
• A dog-friendly office
• In Vilnius office: Gym & in-house meals at friendly prices
• In Kaunas office: a monthly lunch allowance, and a once-a-week provided in-house lunch and breakfast

Individual Learning Budget

We invest in your professional growth! As part of our commitment to continuous learning, we offer an annual learning budget to support your personal and career development through courses, certifications, workshops and more.

Hybrid Work

We’ve adopted a hybrid workplace model where 2 days in the office are recommended but not enforced. It’s up to you and your team to decide on the exact days you’ll spend working together in person.

Equal Opportunity

The Vinted Group is committed to building an inclusive workplace where people from all walks of life feel a sense of belonging. We welcome applications from people of all backgrounds, identities and life experiences. At Vinted, all applicants are treated fairly without regard to their race, age, religion or belief, sex, national origin, citizenship, gender identity, sexual orientation, disability, or any other protected characteristic.

The salary range for this position is € 6,542 - € 8,842 gross per month.