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Senior full-stack engineer (fulltime)

Penarth
UNPROMPTED PTE. LTD.
Full stack engineer
€60,000 a year
Posted: 27 March
Offer description

About Wellknown

In an industry where being right is crucial,Wellknown(https://wellknownlabs.com/) is the AI Provenance Workspace, designed for consulting firms. Our customers love their ability to create insights and output that are truly grounded in facts, avoiding hallucinations that waste costly consulting time and can ruin a firm's reputation.

Our proprietary knowledge base technology and end-to-end workflows allow us to outperform all other solutions; they deliver 80x faster knowledge processing and 3x more accurate insights on complex documents, as validated by external benchmarks.

The founders are both former BCG strategy consultants and Lazada (Alibaba) EVPs, each bringing over a decade of tech experience from roles such as CCO & Deputy CEO at Lazada, and Chief Data & AI Officer at Picnic and Lepaya.

Join a fast-growing startup at a pivotal moment in its scaling journey. We're building a world-leading product powered by cutting-edge AI, and they are looking for exceptional people to help shape what comes next.


Key Responsibilities

* Full-Stack AI Product Delivery:Design and build AI-powered features across the stack; from asynchronous Python services and event-driven pipelines to responsive front-end interfaces in SvelteKit.
* Document Intelligence:Build complex document processing workflows, from ingestion and OCR to layout analysis and element enrichment, orchestrated via resilient, event-driven background workers.
* System Design:Implement secure, scalable API endpoints using FastAPI and PostgreSQL, following strict architectural layering and dependency injection patterns to ensure long-term maintainability.
* Modern Front-end Architecture:Build and maintain our SvelteKit application; composing accessible, responsive interfaces using Svelte 5, Tailwind CSS, and modern component libraries.
* Infrastructure & Reliability:Contribute to cloud-native deployments (GCP/AWS), Redis caching, feature flagging, and robust CI/CD pipelines.
* Security & Compliance:Ensure enterprise-grade security (SOC2/ISO27001 standards), including multi-tenant data isolation, RBAC, and performance optimization.
* Your immediate focus will be the development of AI-powered Canvas and Client Portal features.


Requirements

You're an analytical thinker and doer who thrives in a fast-paced environment with minimal bureaucracy. You approach problems with an open mind and are eager to experiment, learn from every iteration and deliver exceptional results.

* 4+ years of professional experience as a Full-Stack Software Engineer.
* Strong backend expertise in Python (async), with production experience building APIs in FastAPI or similar frameworks.
* Solid experience with modern front-end frameworks — SvelteKit/Svelte 5 strongly preferred, or React/Next.js with willingness to master Svelte. You're comfortable owning UI features end-to-end, from component architecture to styling with Tailwind CSS.
* Strong understanding of relational databases (Postgres), including query optimization, schema design.
* Experience with event-driven architectures, background job systems, or complex workflow orchestration.
* Hands-on experience with cloud infrastructure (GCP preferred; AWS also valued), including containerized deployments (Cloud Run, Docker).
* Ambitious and possess a "get-it-done" mentality, with the ability to take full ownership of deliverables.


Nice to Have

* Hands-on experience with LLM integration, direct experience with agent frameworks is a strong plus.
* Experience with document processing pipelines (OCR, PDF parsing, layout analysis).
* Familiarity with vector databases and semantic search techniques.
* Exposure to real-time features (WebSockets, streaming APIs).
* Experience with observability tooling (structured logging, distributed tracing).
* Familiarity with rich text editors and complex data grid components.
* Experience with SaaS platforms and enterprise security requirements (RBAC, multi-tenancy, SOC2) is highly preferred.
* Experience with WorkOS, Supabase Auth, Microsoft MSAL, or similar auth integrations on the front end.
* Knowledge of resilience patterns in front-end services (circuit breakers, request deduplication).
* Experience with Vitest, Playwright, and Testing Library for front-end testing.


Benefits

We believe great work starts with the right environment. Here's what we offer to help you thrive:

* Be part of the early team driving a world-class product into its growth phase, applying cutting-edge AI to real business challenges for top-tier consulting firms.
* Enjoy abundant opportunities for personal and professional growth in a rapidly scaling organization within Singapore's vibrant tech scene.
* Work directly with our ex-BCG and tech-leader founders, benefiting from their deep domain expertise and strategic guidance.
* Be challenged to deliver your best performance yet, taking full, end-to-end ownership of your function and deliverables.
* Drive high-impact initiatives beyond your core role, aligned with your skills and interests.
* Benefit from a hybrid setup, allowing for flexibility and collaboration.
* Competitive compensation package reflecting your experience and contribution.
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