Senior Web SDK Engineer

About us 

Microblink is the Identity Intelligence OS that establishes Know Your Actor: control over people and agents, how risk is assessed, and how decisions are made across digital journeys. Built for an adversarial AI era, Microblink replaces static verification with continuous identity control. As the only solution spanning IDs, biometrics, and payment cards, Microblink delivers a real-time command center where signals, policies, and decisioning can be calibrated with granular precision. Companies use Microblink to adapt faster than fraud, optimize outcomes over time, and enforce trust at scale across onboarding, authentication, and every moment in between. In 2025, Microblink processed 2.9 billion identities across 195+ countries/territories. Its proprietary Fraud Lab generates 100,000+ images monthly for training and testing models, achieving 100% deepfake detection in DHS-powered testing.

Interested to learn more? Explore our tech in action. 

Our Web team works on solutions that enable our clients to easily extract data from their customer’s documents, like ID cards, driver’s licenses, passports, travel visas, and credit cards, among others. These solutions are used in over 20 industries, with the reach of more than 100 million end-users. You can try our demo (https://demo.microblink.com/blinkid) on any modern desktop or mobile browser.

Here’s what you’ll do:

• Build highly stable and reliable SDKs used by our clients all over the world
• Collaborate with product owners, QA team, and other engineers (Android engineers, iOS engineers, other Web SDKs engineers, C++ engineers)
• Work closely with product management, application software engineers, and partners to understand requirements, specify interfaces for new software frameworks, and enhance existing frameworks
• Together with other team members, participate in decision-making related to the end-user experience and developer experience. We want it to be as easy for developers to integrate our SDK as it is for the end-user to use the final application.
• Contribute to cross-platform SDK development for Flutter and React Native, bridging our Android and iOS native SDK capabilities to mobile cross-platform environments
• Further automate our release and publishing process
• Mentor other engineers and help cultivate a growing team
• Contribute to establishing good engineering practices in software development and suggest improvements for processes, tools, and projects

You'll be successful in this role if you have

• strong proficiency in TypeScript/JavaScript and web development
• deep understanding of web platform development using TypeScript and JavaScript, with a focus on writing clean, maintainable, and modular code
• Solid knowledge of browser APIs, memory management, concurrency (Web Workers, async/await), and performance optimization in browser environments
• Experience with web architecture and best practices – Strong understanding of web architectural patterns, browser lifecycle management, and the modern web ecosystem
• Familiarity with dependency management and package distribution tools (npm, yarn) and module bundlers (Webpack, Vite, Rollup)
• Experience with designing reusable libraries, APIs, or SDKs – Ability to design stable, well-documented APIs with a strong focus on backward compatibility, developer experience, and ease of integration across different JavaScript environments (vanilla JS, bundlers, frameworks like React/Angular/Vue)

Nice to have: 

• Experience with cross-platform frameworks (React Native and/or Flutter), including building or maintaining plugins/bridges between native Android/iOS and cross-platform layers.
• Experience with WebAssembly (WASM) and C++ interop
• Hands-on experience writing WASM bindings to C++ code, exposing native functionality to JavaScript/TypeScript consumers
• Familiarity with toolchains such as Emscripten, and understanding of the WASM execution model, memory model, and its constraints within the browser sandbox.

Here’s what you’ll gain if you join us:

• Microblink owes its success to its people. That is why we offer equity participation to all of our full-time employees so that we can grow together
• Unlimited PTO, giving you the flexibility to take time off as needed to maintain a healthy work-life balance
• Location-specific benefits tailored to meet diverse personal preferences and country standards
• Flexible work arrangements, allowing you to adjust your schedule—whether working remotely or at our Zagreb or New York office
• Opportunities to learn and develop your skills through internal L&D programs and a supportive working environment

At Microblink, we nurture a culture that recognizes and rewards success, and is not afraid to try, fail and learn from mistakes. Find out what it feels like to work at Microblink

How can you join us?

We are reviewing applications from candidates based in Croatia, Serbia, Romania, and Bulgaria. Candidates must have residency and work authorization in one of these countries. We do not offer visa sponsorship or B2B engagement at the moment.

If this role intrigues you, do not hesitate to hit the apply button and send us your resume. We are excited to meet talented people even if you don’t feel that you match 100% of the requirements.

So don’t let that discourage you - get in touch with us and we promise to get back to you.

Microblink LLC is an equal opportunity employer committed to diversity and inclusion in the workplace. This policy applies to all employment practices within our organization, from hiring to the end of your business relationship with us. Accordingly, this job advertisement is equally applicable to all people and Microblink will make a hiring decision based solely on qualifications, merit, and business needs. We prohibit discrimination of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws, as well as our internal policies and culture.

For detailed information on how we process personal data, please read our Privacy Policy https://microblink.com/privacy-policy/ or reach out to our Data Protection Officer at privacy@microblink.com.