Tangem is a high-tech company in the blockchain sector was founded in 2017, headquartered in Zug, Switzerland, with branches in North America, Eastern Europe, and APAC.
Tangem started with the idea of bringing digital assets to the masses using a unique combination of a smartcard-based hardware wallet and mobile applications. Company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today. Our customers enjoy setup time within 1 minute with the ultimate security level for digital assets on their wallet. Tangem solutions offer multi-support of a growing number of thousands of tokens by a single wallet. SBI Crypto Investment Ltd., the digital asset venture investment company wholly owned by SBI Holdings Inc., has invested $15 million into Tangem in 2019 for mass adoption of blockchain technology.
About the role
We are building capability for Tangem customers to trade US equities inside the mobile app (iOS/Android), with an external vendor as our partner.
You own the technical analysis: you learn the vendor's platform in depth and turn it into frontend and backend specifications our developers build from.
Key Responsibilities
- Analyse vendor's APIs and those of their technology partners in depth: order lifecycle and states, account and position models, funding rails, market data feeds, corporate actions handling, webhooks, error codes, throttling, and sandbox behaviour. Establish what the platform actually does rather than what the documentation implies.
- Write the frontend and backend specifications the development team works from - screen flows, states and edge cases, data models, API contracts, integration sequences, error and reconciliation handling.
- Specify the trade signals pipeline: data source, indicator computation, subscription and delivery model, and push infrastructure.
- Specify the regulatory support surface, including trade and order blotters, audit trail, communications archive for signal content and its approval workflow, complaint logging, and exception reports.
- Own the technical dialogue with the vendor: raise gaps, get answers documented, and record what has been confirmed versus assumed.
- Define the test and sandbox strategy, and the acceptance criteria development will be measured against.
- Support the development team through build and testing, resolving specification questions and keeping documents current as decisions change.
Qualifications & Requirements
- 4+ years as a system or technical analyst, developer, solution architect, or in a comparable role, with experience working on mobile applications (iOS/Android) and producing specifications others built from.
- Experience with trading or brokerage systems - including order management, market data, execution, settlement, or reconciliation. This is a core requirement for the role.
- Technical foundation - software development, engineering, or mathematics. You read API documentation fluently, reason about system architecture, and talk to developers as a peer.
- Demonstrable experience integrating a substantial third-party API into a production system, ideally one where correctness and state consistency mattered more than speed of delivery.
- Written specifications we can see. This is the core skill and we will ask for examples. Precise, structured, complete on edge cases and failure paths.
- Comfortable working from incomplete information: chasing a partner for an answer, documenting the assumption in the meantime, and revisiting it when the answer arrives.
- Fluent professional English, including in writing.
Preferred / Nice-to-Have Qualifications
- US equities market structure specifically;
- familiarity with FIX;
- retail brokerage or mobile trading product experience;
- technical analysis and indicator libraries;
- SQL or Python;
- Figma and Miro;
- crypto and self-custody literacy for later phases.
Perks & Compensation
- Stability, development, participation in the future unicorn's growth;
- Remote work from anywhere in the world, with a schedule aligned with GMT+3;
- Competitive salary in EUR/USDT;
- Unlimited vacation;
- Birthday presents;
- Compensation for the purchase of necessary technical devices for the work;
- Paid sick leave. idakhin@tangem.com
About Tangem
Tangem is a Swiss-based high-tech blockchain company founded in 2017 and headquartered in Zug, Switzerland, with offices in North America, Europe, and APAC. Tangem manufactures cold hardware wallets that allow users to store digital assets safely using smartcards paired with mobile applications. Tangem wallets support thousands of tokens across multiple blockchains with a 1-minute setup time and serve customers across 220+ countries.