Senior Mobile Researcher

About the role:

We are looking for a talented and creative Mobile OS Research Developer with a focus on iOS to join us in combating online fraud. In this role, you'll play a key part in identifying and neutralizing sophisticated fraudsters in real-time, at a large scale, for some of the world's largest enterprises. This role requires responsibility, creative thinking, and a can-do attitude to solving problems with non-trivial constraints - this is not a "brute force" hacking/reversing type role.

What you'll be doing:

• Collaborate with a team of passionate researchers to solve modern digital intelligence challenges and uncover groundbreaking discoveries together.
• Research the internals of different mobile OSs, with a primary emphasis on iOS, find lesser-known APIs, understand upcoming features, and design innovative solutions to leverage them in our products.
• Develop code that runs on iOS and, when applicable, Android devices within Forter's SDK (ObjC/Swift, Java/Kotlin).
• Extract powerful data from the device while being extra careful about safety (zero crashes), and performance (battery, network, etc.).
• Take ownership of the entire data flow process from concept to implementation, collaborating closely with analysts and engineers to ensure seamless integration.
• Deliver and publish SDKs to production which will be used by thousands of merchants to interact with tens of millions of users each day.

What you'll need:

• A love for unraveling mysteries and digging deep into complex environments.
• 4+ years of experience and proven expertise in iOS internals (Android experience is a plus).
• Experience building modern mobile apps / SDKs, OS Services, APIs, and development cycles.
• Awareness and familiarity with mobile developer concerns when building apps (security, performance, privacy, compatibility, etc.) at scale.
• Up-to-date knowledge of new OS beta releases and upcoming changes/features.
• Ability to identify risks and roadblocks that could impact our code/SDK/legal in the future.
• Experience developing backend services at scale (primarily - an advantage).
• Familiarity with reverse engineering tools and techniques (an advantage).
• Experience with XPC services (an advantage).

About us:

Digital commerce is built on trust. At every point along the eCommerce journey, businesses must make a critical decision: Can I trust this customer? Answering this simple question accurately and instantly is powerful—it can accelerate revenue growth and strengthen a company's connection with its customers. How do we do it? Forter was founded on the insight that it's not about what is being purchased, nor where— but who is behind the interaction.

The Forter Decision Engine finds patterns across more than one billion identities in our dataset. We isolate fraudsters and protect customers—ensuring everyone gets the experience they deserve.  Given that trust is central to how we operate, Forter is very much driven by a defined set of values. We attract remarkable talent and have retention and engagement levels that are well above benchmarks. We're meticulous about strengthening our culture as we grow and ensuring this is an environment where people can have outsized impact. 

Trust is backed by data –  Forter is a recipient of over 10 workplace and innovation awards, including: 

• Great Place to Work Certification (2021, 2022, 2023, 2024)
• Fortune's Best Workplaces in NYC (2022, 2023 and 2024)
• Forbes Cloud , 2022, 2023, 2024 and 2025)
• #3 on Fast Company's list of "Most Innovative Finance Companies" (2022)
• Anti-Fraud Solution of the Year at the Payments Awards (2024)
• SAP Pinnacle Awards "New Partner Application Award" (2023)
• Fintech Breakthrough Awards – Best Fraud Prevention Platform (2023)

Life as a Forterian:

We are a team of over 600 Forterians spread across 3 different continents. Since 2013, we've raised $525 million from investors such as Tiger Global, Bessemer, Sequoia Capital, March Capital and Salesforce Ventures. We're on a mission to bring trust to global digital commerce so that companies like Adobe, ASOS, eBay, Instacart, Priceline and Nordstrom can block fraud, drive revenue and improve customer experience.

At Forter, we believe unique people create unique ideas, and valuable experience comes in many forms. So, even if your background doesn't match everything we have listed in the job description, we still encourage you to apply and tell us why your skills and values could be an asset to us. By welcoming different perspectives, we grow together as humans and as a company.

Forter is an Equal Employment Opportunity employer that will consider all qualified applicants, regardless of race, color, religion, gender, sexual orientation, marital status, gender identity or expression, national origin, genetics, age, disability status, protected veteran status, or any other characteristic protected by applicable law.

If you need assistance or an accommodation due to a disability, please email us at  This information will be treated as confidential and used only for the purpose of determining an appropriate accommodation for the interview process.

Hybrid work:

At Forter, we embrace a hybrid work model that blends in-person connection with the flexibility of remote work. Team members based near our key hubs are expected to work from the office at least three days per week. We believe that regular face-to-face collaboration fuels professional development, strengthens our culture, and builds the relationships that help teams thrive.

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