Senior Frontend / Full-Stack Engineer

About us Assetera is a regulated (MiFID) brokerage for tokenized securities and real-world assets. We run a marketplace and the API rails that let banks and brokers offer our instruments to their own customers; a true B2B2C platform. We're a small, senior team building a modern, identity-first, multi-tenant stack to replace a legacy monolith, so there's a lot of greenfield and real ownership on offer. The role You'll own our frontend architecture and ship regulated fintech features end-to-end. Next.js frontends plus the Node/BFF glue when a feature needs it. You'll set the conventions the rest of the team builds on, contribute to our design system, and record the big calls as ADRs. Our stack Next.js (App Router)React 18TypeScript (strict)Tailwind with a Storybook-driven design systemTanStack Query / SWRNode + Fastify + Drizzle + PostgreSQL BFFKeycloak / OIDCRedisAzure Container AppsGitHub ActionsOn-chain settlement (EVM) underneath — infrastructure, not the headline You'll thrive here if you have 5+ years shipping production web apps, deep in React and TypeScript, strong with Next.js App RouterA component-driven, design-system mindset (Tailwind, tokens, variants) and a strict-TypeScript habitEnough full-stack range to ship through a Node/Postgres BFF without waiting on backendA real grasp of web auth (OIDC/OAuth2, sessions, HttpOnly cookies, JWTs)Testing, accessibility, and performance as defaults, backed by clear written communication Bonus points Web3 front-end experience (wagmi/viem, WalletConnect)Keycloak/KeycloakifyFintech or regulated/multi-tenant SaaS backgroundReal-time UIs (SSE)AzureGerman language proficiency What we offer Early influence on architecture and conventions, a modern greenfield stack, a small senior team with low process and high ownership, and hybrid working from our Vienna HQ.