At OneSpan, we specialize in digital identity and anti-fraud solutions that create exceptional and secure experiences.

OneSpan is currently looking for a Staff Engineer — Mobile SDK to join our team in Barcelona.

We're looking for a Staff Engineer to join our Mobile SDK team and elevate how we build, test, and ship security-critical software. This is a hands-on technical leadership role where you'll define engineering standards, build quality infrastructure, and enable the team to deliver SDKs that protect mobile applications for major financial institutions worldwide.

What You'll Own
- Technical standards and infrastructure: Define engineering standards across the SDK codebase (written in C) and build the infrastructure that enforces them automatically: quality gates, release automation, and developer tooling that makes doing the right thing the easy thing.
- Code quality and architectural guidance: Review critical code paths across Android and iOS with deep attention to edge cases, error handling, and failure modes.



Guide the team toward more robust design decisions through thoughtful questioning and technical mentorship.
- Cross-functional technical leadership: Bridge between SDK engineering and security teams. Structure technical collaboration patterns that enable effective contribution without compromising code quality or introducing risk.
- Technical decision-making and tradeoff analysis: Lead technical discussions on API design, performance optimization, security implementation, and platform-specific behavior. Make informed decisions on complex tradeoffs where there's no obvious right answer.
- Team growth and technical mentorship: Elevate the team's technical judgment and problem-solving capabilities. Help senior engineers develop deeper intuition about system behavior, anticipate failure modes, and think more critically about their technical decisions.
- Release engineering and operational excellence: Own the end-to-end release process for both platforms

📌 Principal Engineer — Mobile SDK (Barcelona)
🏢 Onespan
📍 Barcelona