Senior Full-Stack Engineer Onboarding (SDK)

Taktile empowers financial institutions to transform into truly AI-native organizations. Were growing rapidly with enterprise customers across banks and insurance companies and were looking for a Senior Full-Stack Engineer.

About the role

Taktile helps financial institutions make smarter safer decisions with the power of AI. Our software gives teams the tools to automate complex decisions from customer onboarding and underwriting to fraud detection with full visibility and control. By combining AI with a rich ecosystem of financial data we enable companies to adapt their decision-making in real time as markets customer behavior and risks evolve.

Were looking for a Senior Full-Stack Engineer to be a founding member of the Web SDK team and help shape this product from the ground up. Youll own the architecture of a unified client-side SDK that abstracts identity verification device intelligence and document capture behind a single elegant integration used by financial institutions to onboard customers securely and seamlessly. This is a high-impact high-ownership role with a clear path to leading the team as it grows.

If youve built SDKs shipped embeddable components or worked on developer-facing products that run in other peoples browsers and youre excited about doing it again at the intersection of fintech and platform engineering wed love to talk.

What Youll Do

• Architect the SDK from scratch: Design and build a client-side JavaScript/TypeScript SDK that orchestrates multiple third-party vendor scripts behind a unified headless API.

• Build the hosted verification experience: Create a secure embeddable web application that renders interactive identity verification flows with a polished brandable UX.

• Own reliability end-to-end: Establish versioning strategies staged rollouts and CI/CD pipelines for client-side code that runs in customer browsers.

• Solve hard integration problems: Wrangle vendor SDKs that each have their own quirks lifecycle hooks and failure modes and make them work together seamlessly.

• Shape the product and the team: Collaborate with Product Design and customers to define the SDKs developer experience. As the team grows youll have the opportunity to step into a tech lead role.

• Work directly with customers: Engage with early adopters to understand their integration environments and ensure the SDK works flawlessly in the real world.

Requirements

• Hybrid role based in Berlin or London. We collaborate in person regularly and dont offer remote-only for this position.

• Fluent English required. Youll write design docs review PRs with context and occasionally join customer calls.

• Strong engineering fundamentals across the full stack: youre equally comfortable designing clean APIs and building responsive accessible front-end experiences.

• Deep understanding of how browsers work: the DOM security models (CSP CORS iframe sandboxing) caching script loading and performance.

• Comfortable operating systems in production and participating in incident response as part of a team rotation.

Required Experience

• 5 years of professional software engineering experience

• At least 2 years building and shipping a client-side SDK embeddable widget or developer-facing JavaScript library used by external consumers. You know what it takes to version distribute and support code that runs in environments you dont control.

• Production experience with TypeScript/JavaScript on both client and server. Youve built modern front-end applications and understand bundling tree-shaking and cross-browser compatibility deeply.

• Experience with iframe-based architectures postMessage communication and sandboxed execution environments.

• Proficient in backend development (Python is a plus) you can build the APIs and configuration services that power the SDK.

• Prior industry experience with public cloud providers (preferably AWS).

Ideal But Not Required

• Experience in identity verification fraud prevention or fintech - youve worked with providers like Socure Vouched Onfido Fingerprint or ThreatMetrix.

• Familiarity with media APIs (camera access image capture WebRTC) and the nuances of building permission-driven UX flows.

• Experience building developer tools documentation or SDKs with a focus on great developer experience.

• Previous experience as a tech lead or strong desire to grow into one you enjoy mentoring setting technical direction and making architecture decisions that scale.

• Knowledge of security and compliance considerations (SOC2 PII handling) for client-side applications in regulated industries.

Our Offer

• Work with colleagues that lift you up challenge you celebrate you and help you grow. We come from many different backgrounds but what we have in common is the desire to operate at the very top of our fields. If you are similarly capable caring and driven youll find yourself at home here.

• Experience a truly flat hierarchy and communicate directly with founding team members. Having an opinion and voicing your ideas is not only welcome but encouraged especially when they challenge the status quo.

• Learn from experienced mentors and achieve tremendous personal and professional growth. Get to know and leverage our network of leading tech investors and advisors around the globe.

• Receive a top-of-market equity and cash compensation package.

• Get access to a self-development budget you can use to e.g. attend conferences buy books or take classes.

• Receive a new Apple MacBook Pro as well as meaningful home office set-up.

Our Stance

• Were eager to meet talented and driven candidates regardless of whether they tick all the boxes. Were looking for someone who will add to our culture not just fit within it. We strongly encourage individuals from groups traditionally underestimated and underrepresented in tech to apply.

• We seek to actively recognize and combat racism sexism ableism and ageism. We embrace and support all gender identities and expressions and celebrate love in its many forms. We wont inquire about how you identify or if youve experienced discrimination but if you want to tell your story we are all ears.

About Us
Taktile enables financial institutions to transform into AI-native organizations that are increasingly powered by autonomous agents. With our modular Agentic Decision Platform customers combine AI agents rules relevant context and human oversight to safely automate and optimize their decisionsapproving more customers reimbursing claims instantly stopping fraud before it spreads and financing every business worth funding. Founded in 2020 Taktile powers millions of decisions daily for institutions including Mercury Monzo Faire and Pleo. With offices in New York Berlin London São Paulo and Iași the company has raised $184M from Growth Equity at Goldman Sachs Alternatives Index Ventures Tiger Global Balderton Capital and Y Combinator. Learn more at

About Your Employment. Taktile operates through regional entities worldwide. Depending on the location of this role your employment or engagement will be with Taktile LLC (US) Taktile GmbH (Germany) Taktile Ltd (UK) or Taktile SRL (Romania). The applicable entity will be confirmed during the offer process.

Your Privacy. Taktile (we or us) is the controller of the personal data you provide during this

application process. We collect and process your name contact details resume/CV work history education and any other information you submit or that we obtain from publicly available sources or references.

How we use your data: We process your personal data to evaluate your candidacy communicate with you about the recruitment process comply with legal obligations (such as right-to-work verification) and with your consent to consider you for future opportunities.

Legal basis (EU/UK applicants): We rely on (i) pre-contractual steps at your request (GDPR/UK GDPR Art.6(1)(b)) (ii) legal obligations (Art. 6(1)(c)) and (iii) our legitimate interest in evaluating candidates (Art.6(1)(f)).

Retention: If your application is unsuccessful we retain your data for 12 months after the recruitment process concludes unless you consent to longer retention. Successful candidates data becomes part of their employment records.

Your rights: Depending on your location you may have the right to access correct delete or restrict the processing of your personal data to data portability and to withdraw consent.

Automated decision-making: We use automated tools to assist in screening applications. No hiring decision is made solely by automated means without human review.

International transfers: Your data may be transferred to and processed in the United States Germany the United Kingdom or Romania. Where required transfers are protected by Standard Contractual Clauses or other approved mechanisms.

By submitting your application you acknowledge that you have read and understood Taktiles Applicant Privacy Policy. To exercise your rights or ask questions contact

Required Experience:

Senior IC