Mobile Engineer, Fireblocks
3+ days a week in office
Helping financial institutions securely transfer digital assets
Be an early applicant
Helping financial institutions securely transfer digital assets
501-1000 employees
Be an early applicant
3+ days a week in office
501-1000 employees
Company mission
To enable every business to easily and securely support digital assets and cryptocurrencies.
Role
Who you are
- 5+ years of software engineering experience, with deep focus on mobile development and shipping production-grade SDKs
- Demonstrated track record of building and shipping high-quality code, with work you can point to and discuss in depth
- Strong hands-on experience with iOS (Swift) and/or Android (Kotlin); experience with React Native or other cross-platform frameworks, and familiarity with all
- Experience building mobile SDKs or shared libraries, including API design, versioning, packaging, and long-term maintenance across platforms
- Experience with blockchain-enabled mobile systems, including wallet flows, signing, and on-chain interactions
- Experience working on security-sensitive mobile software, such as key management, secure storage, cryptography, or financial products
- Strong grasp of mobile engineering best practices, including CI/CD, automated testing, release management, and observability
- A get-things-done mindset with the ability to independently own problems and deliver end-to-end solutions
- Comfortable making long-term architectural decisions while remaining pragmatic and adaptable
- B.Sc. in Computer Science / Engineering or equivalent practical experience
- Remote role in a distributed team; preference for candidates in the Americas time zone
Desirable
- Rust and/or WebAssembly (Wasm) experience, particularly building cross-platform SDKs consumed by mobile apps
- Experience designing shared core logic used across iOS and Android
- Experience with advanced mobile security primitives (secure hardware, MPC, low-level crypto)
- Prior experience owning or founding a mobile platform or SDK from scratch
What the job involves
- Dynamic builds and maintains developer-first SDKs that enable teams to seamlessly integrate embedded wallet functionality directly into their applications. These embedded wallets allow end users to create, manage, and use wallets without leaving the product experience, making wallets feel like a native part of modern fintech and crypto apps
- As part of Fireblocks, the Dynamic team continues to build and scale the infrastructure and developer tooling that has onboarded 50M+ wallets across crypto and fintech applications. In this context, Dynamic powers the application-layer wallet experience and developer tooling, complementing Fireblocks’ core custody, security, and transaction infrastructure
- The team operates with a strong product mindset and deep focus on security, reliability, scalability, and exceptional developer experience. Engineers at Dynamic build secure-by-default systems and approach their work with a strong customer focus, balancing technical excellence with real-world user needs
- You will be joining a passionate group that moves fast, works with the biggest names in payments and fintech, and is defining how the next generation of financial applications are built
- Design and implement high-quality native mobile SDKs that enable developers to integrate embedded wallet functionality into their applications, with a strong focus on API ergonomics, performance, and reliability
- Own SDK features end-to-end: from API design and architecture, through implementation and testing, to release, versioning, and developer documentation
- Build and maintain secure, reliable SDK components for wallet operations, including cryptographic operations, blockchain interactions, and security-sensitive flows
- Define and evolve the SDK architecture to support long-term maintainability, backward compatibility, and adoption across diverse customer applications
- Build sample applications and demos that showcase SDK capabilities and serve as integration references for customers
- Create clear, comprehensive SDK documentation and integration guides
- Work with developer relations and support teams to address customer integration challenges
- Raise the bar for quality and operational excellence by establishing best practices around testing, observability, releases, and code health
- Contribute to a culture of ownership and execution, leading by example through hands-on work, code reviews, documentation, and knowledge sharing
Our take
The derivatives market has always been attractive for larger investors, but one of the biggest hurdles they needed to overcome has to do with capital efficiency, custody and security. Fireblocks allows for the trading of derivatives on any asset, using any form of collateral while receiving cross-margin benefits across counterparties. Essentially, it enables institutional traders to move digital assets without the operational or security headache.
By trying to make digital asset trading more secure, Fireblocks is banking on assets like cryptocurrencies becoming a new part of the mainstream trade of financial institutions. Cryptocurrencies are known for being notoriously unstable in their value but when traded properly, can be hugely profitable. Fireblocks believes that their cybersecurity services will make the industry seem safer and thereby make it more attractive to new participants.
In fact, Fireblocks are already on to something here. Now that cybersecurity standards have been boosted, a whole new crop of institutional entities has already set up shop in the crypto world. The more that follow suit, the more stable the market becomes - and the more potential clients Fireblocks can access. If Fireblocks can make digital assets both accessible and secure for mainstream traders, as they are doing through partnerships with the likes of CoinTrade, they have a huge potential market waiting to be tapped into.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
20% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Jan 2022
$550m
SERIES E
Jul 2021
$310m
SERIES D
Total funding: $1.0bn
Company benefits
- Work from home opportunities
- The opportunity to learn from and collaborate with leading industry professionals on cutting-edge financial and security technology in a fast-paced, creative environment
- Ability to have a direct impact on an exciting product and the user experience
- Competitive salary, benefits, and equity
- Flexible vacation policy
Company HQ
Garment District, New York, NY
Leadership
Michael Shaulov
(CEO)Prior to Fireblocks, they co-founded Lacoon Mobile Security, which was acquired by Check Point, and was then appointed the Head of Products, Mobile and Cloud Security for Check Point. Previously a seed investor in Armis Security and Orca Security.
Paul Berengoltz
(VP R&D)Previously director of research at Lacoon Mobile Security.
Idan Ofrat
(CTO)Ex software consultant and previous VP Product at Orbs - a blockchain company.
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