---
title: 'Senior Fullstack Engineer (AI Focused) at OAK''S LAB'
canonical: 'https://feeny.ai/job/senior-fullstack-engineer-ai-focused-oak-s-lab-prague-g8d39850rqv8'
type: 'job'
last_seen: '2026-09-09'
---

# Senior Fullstack Engineer (AI Focused) at OAK'S LAB

- **Company:** OAK'S LAB
- **Location:** Prague, Czech Republic
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-05-15
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/oakslab/966771e3-95ae-4a33-900b-6cd6c2c6aa7d

## Job description

**This is a remote position open to candidates in Europe and Turkey. For those based in the Czech Republic, a hybrid work model is available.

## ABOUT US

We are a leading product development partner specializing in custom web and mobile application development. With Silicon Valley founders and top-tier European tech talent, we operate from Prague and have successfully delivered over 65 software products for early-stage startups, scaleups, and global enterprises.

- Founded in 2016
- Headquartered in Prague
- Built and launched 65+ products
- 90+ team members
- Driving product innovation for leading US companies

At OAK’S LAB, we take an AI-first approach, utilizing AI on almost every project. From streamlining design and testing workflows to enhancing developer productivity, our teams leverage tools such as Figma MCP Server, Playwright MCP Server, and Cursor, and we’re actively experimenting with remote AI agents to push the boundaries of what’s possible in product development.

## OUR PROJECTS

Here are a few from our portfolio:

- Nasdaq Private Market (Series C, Finance)- nasdaqprivatemarket.com http://nasdaqprivatemarket.com
- Blackpoint Cyber (Series B, Cybersecurity) - blackpointcyber.com http://blackpointcyber.com
- OpenLoop (Series A, Healthcare) - openloophealth.com http://openloophealth.com

## THE ROLE

Our product development team is seeking a Senior Full-Stack Engineer who brings creative thinking, problem-solving, and proactive technical expertise to build outstanding web and mobile applications for our clients. You’ll be working on cutting-edge projects, solving challenges that were previously unsolvable without the use of AI

We are specifically looking for engineers who have hands-on experience building AI-driven solutions and integrating AI models into production applications. This includes practical experience working with LLM APIs, AI-powered workflows, retrieval systems, or other AI integrations that deliver meaningful value to end users.

In this role, you will work within a dedicated product team consisting of the Tech Lead for the specific product, a Product Manager, a Designer, and a skilled team of engineers to drive the product’s success. From engaging in technical discussions to engineering complex features, your involvement spans the entire product development lifecycle.

## RESPONSIBILITIES

- Design scalable, modular, and maintainable architectures for AI-powered applications
- Collaborate with product teams to understand feature requirements and translate them into technical solutions leveraging AI models
- Integrate APIs (e.g., LLM APIs (e.g. OpenAI), Hugging Face API) into applications for tasks such as NLP and image recognition
- Implement prompt engineering, embeddings, and other techniques to customize model outputs without building models from scratch
- Implement vector databases in Postgres for RAG
- Use tools like Hugging Face’s Transformers to further customize pre-trained models to suit specific project requirements
- Optimize server-side logic to ensure efficient querying and integration with AI tools
- Work with unstructured data (text, images, etc.) and convert it into model-ready formats
- Validate the output quality from AI models to ensure it aligns with business needs and provides value to end-users

## SKILLS & REQUIREMENTS

- 6+ years in engineering
- 3+ years of experience in building web solutions using Node.js and React
- Experienced with Javascript/Typescript
- Hands-on experience building AI-driven solutions and integrating AI models or AI-powered services into production applications
- Focus on code quality
- Desire to learn new technologies
- Strong analytical and problem-solving skills
- Proactiveness and the capability to make a difference
- Driven, hard work ethic, showing commitment
- Ability to work effectively in a team environment, following Agile methodologies
- Proficiency in English

## TECH STACK

- TypeScript
- Node.js
- React + Next.js
- React Native
- GraphQL, tRPC
- Google Cloud Platform
- HuggingFace API, LLM APIs (eg OpenAI API), Langchain
- Postgres/Vector Databases for RAG

Important Notice: OAK'S LAB communication, including interview requests and job offers, are only sent from an "@oakslab.com http://oakslab.com" or "@oaks-lab.com http://oaks-lab.com" email addresses (e.g., john@oakslab.com or john@oaks-lab.com). Any message from a different email domain is not associated with OAK'S LAB. We will never ask for payment information or banking details via email, phone, or any other communication channel during the interview process. If you receive messages using our name, domain, or brand assets in an attempt to impersonate us or act on our behalf, do not engage. Instead, report it to Econsumer.gov http://Econsumer.gov at Government Shutdown Notice / Aviso de cierre del gobierno https://econsumer.gov/ (if you are in the EU), Federal Trade Commission (FTC) at Government Shutdown Notice / Aviso de cierre del gobierno https://reportfraud.ftc.gov/ , or the Securities and Exchange Commission (SEC) in case of investment fraud at SEC.gov http://SEC.gov | Report Suspected Securities Fraud or Wrongdoing https://www.sec.gov/tcr (if you are in the US).

## About OAK'S LAB

## Company Overview
- **One-liner**: Product, engineering, and AI partner for high-growth tech companies, building software products that help clients achieve scale and market leadership.
- **Entity Type**: Private, Bootstrapped (no external investors)
- **Headquarters**: Prague, Czech Republic
- **Founded**: 2016
- **Founders**: Jake Dluhy-Smith (CEO & Co‑Founder) and Theo Dluhy-Smith (Co‑Founder)

## Core Business
- **Primary industry**: Custom software development, product engineering, and AI integration services.
- **Target customers**: B2B – high‑growth startups (Series A through D), Fortune 500 enterprises, and scale‑up companies needing product‑focused engineering partnerships.
- **Mission**: “Bring people together to drive technological progress and achieve ambitious business outcomes.”
- **Vision**: “Empower innovators to improve life and the world.”

## Products & Services
OAK’S LAB offers two engagement models – **Embedded Roles** (individual contributors or teams integrated into the client’s org) and **Autonomous Teams** (full cross‑functional workstreams owning discovery and delivery). Their core service pillars are:

- **Product Discovery**: Validating product ideas, defining strategy, and de‑risking decisions before building.
- **Custom Software Development**: Full‑stack builds using React.js, Node.js, and modern architectures.
- **Agentic AI Systems**: AI‑powered features and AI‑native delivery embedded throughout the software development lifecycle.

**Notable client products built by OAK’S LAB:**
- **PlexTrac** – AI‑powered platform for penetration test reporting and real‑time threat exposure management (used by Fortune 500).
- **Capital Markets Gateway** – First US platform connecting the sell‑side and buy‑side in equity capital markets, representing over $40 trillion in assets.
- **OpenLoop Health** – Healthcare technology solutions for telehealth and remote patient monitoring.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (bootstrapped, no external funding).
- **Key Metric**: 85+ team members; 65+ client products built and launched; 89% client retention post‑initial contract; 4‑year average partnership duration.
- **Notable Investors/Partners**: No institutional investors. Clients include Fortune 500 companies and high‑growth startups such as Blackpoint Cyber, PlexTrac, Capital Markets Gateway, and OpenLoop Health.
- **Growth Signals**:
  - 3× development speed achieved through AI‑integrated delivery practices.
  - Helped one startup client surpass $1 B in annual revenue and multiple clients raise over $200 M combined.
  - ISO 27001 certified; recognized as thought leader at South Summit and Czech Innovation Week.
  - 5‑star rating on Clutch with 32+ client reviews.

## Competitive Advantages
- **Elite talent pool**: Only the top 0.4% of applicants are hired – experienced product builders who have scaled companies in regulated industries.
- **Long‑term partnerships**: Average engagement lasts 4 years (not project‑based), ensuring ownership, continuity, and deep product knowledge.
- **AI‑native delivery**: AI is embedded in every phase (discovery, development, review), compounding quality and speed.
- **High‑compliance expertise**: Deep experience in cybersecurity, healthcare, and finance – industries where regulatory and reputational risks are critical.
- **Proven methodology**: Proprietary “OAK’S LAB WAY” refined over 65+ client engagements, applied consistently across teams.

## Strategic Focus
- Deepen AI integration across the software development lifecycle to maintain a 3× speed advantage.
- Continue building a strong client portfolio in FinTech, cybersecurity, and AI‑powered products.
- Help clients transition from outsourced teams to their own in‑house European engineering hubs when they are ready.
- Expand presence as a thought leader and preferred partner for Series B‑D companies.

## Why Work Here
- **Small, autonomous teams**: Teams of 5–10 people, each focused on a single client product – every member has high impact.
- **Diverse, multinational culture**: Close to 20 nationalities; English is the company’s main language; open‑minded and collaborative environment.
- **Cutting‑edge work**: Build products at the intersection of AI, regulated industries, and high‑growth scaling – from zero‑to‑one to unicorn stage.
- **Learning and growth**: Access to the proprietary OAK’S LAB WAY methodology and cross‑industry exposure across 65+ projects.
- **Location**: Office‑based in Prague (remote/hybrid policy not explicitly stated, but teams often embed with US clients). Selective hiring – candidates join a waitlist.

## Sources
1. [oakslab.com](https://www.oakslab.com/) – Homepage (services, differentiators, client logos)
2. [oakslab.com/about](https://www.oakslab.com/about) – Founding story, mission, vision, leadership, and key statistics
3. [oakslab.com/careers](https://www.oakslab.com/careers) – Team structure, methodology, work culture
4. [jobs.ashbyhq.com/oakslab](https://jobs.ashbyhq.com/oakslab) – Current job openings and waitlist
5. [linkedin.com/company/oakslab](https://in.linkedin.com/company/oakslab/) – LinkedIn company page (team size, industry, location)

## Other roles at OAK'S LAB

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- [Senior Product Manager/Product Lead](https://feeny.ai/job/senior-product-manager-product-lead-oak-s-lab-prague-7kc5tcq24b4f) — Prague, Czech Republic
- [Senior Technical Product Manager/Technical Product Lead](https://feeny.ai/job/senior-technical-product-manager-technical-product-lead-oak-s-lab-prague-s6372c0nzg82) — Prague, Czech Republic
- [Tech Lead (Node&React) - Portugal](https://feeny.ai/job/tech-lead-node-react-portugal-oak-s-lab-portugal-hx8y1aekbkgt) — Portugal
- [Social Media Manager & Content Creator](https://feeny.ai/job/social-media-manager-content-creator-oak-s-lab-prague-c4xr19pnkk1g) — Prague, Czech Republic
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