Senior React Engineer, Yoummday
Full Stack & AI Products
Global CX marketplace
Be an early applicant
Global CX marketplace
501-1000 employees
Be an early applicant
501-1000 employees
Company mission
To improve people's working conditions, protect the environment, and make companies more successful with its disruptive work@home operating system.
Role
Who you are
- React expertise (must-have): You bring several years of hands-on experience with React and TypeScript - component architecture, state management, performance optimization and testing are part of your daily work, not just theory. You use React Router 7+ and modern patterns (Hooks, Composition) as a matter of course
- Full stack breadth: You build solid Python backends with FastAPI or Django and are comfortable with BFF patterns, REST APIs and database integrations (PostgreSQL, MongoDB). Our stack: Python 3.11, React Router 7 with TypeScript, type hints and pre-commit hooks for clean code
- AI integration experience: You've shipped LLM APIs, voice services or NLP models into production systems - not just side projects. You know how to embed AI outputs into UIs that actually feel good to use
- Tooling & infrastructure: Docker, Git and CI/CD pipelines are part of your everyday workflow. You're comfortable on Linux systems and ensure stable development and deployment processes. "You build it, you run it" - Prometheus and Grafana are familiar territory
- Ownership & pace: You turn rough requirements into concrete tasks, work proactively with cross-functional teams, and know when clean code matters and when shipping fast matters more
What the job involves
- You don't just want to build features - you want to build AI products that solve real problems for real users, with React as your primary tool and Python as a solid backend foundation? Then you're in the right place
- We're a family-owned scale-up headquartered in Munich with over 400 employees across five locations in Europe. Our platform gives thousands of people worldwide a flexible, self-determined way to work - and we're still growing
- AI is not a trend for us: we've been running AI features in production long before the hype started - backed by a strong research team in NLP, Speech and Computer Vision. Now we're building a dedicated AI Unit that owns AI products end-to-end - like a startup inside a scale-up
- We're looking for you: a (Senior) Full Stack Engineer (m/f/d) with a strong React foundation who lives end-to-end ownership and builds AI products that users can rely on every single day
- Work fully remote or hybrid from our offices in Munich, Berlin or Sofia (Bulgaria)
- React-first UI development: You build complex, high-performance frontends with React Router 7+, TypeScript and deliberate component design - for voice interfaces, coaching tools and AI QA dashboards used by agents on a daily basis
- AI integration from UI to service layer: You wire LLM APIs, voice models and NLP services into production-ready systems - and build the Python backends (FastAPI/Django) that make those integrations run reliably
- End-to-end ownership: You take systems through their full lifecycle - from MVP and pilot to high-scale production systems processing thousands of calls per day. Performance, stability and monitoring (Prometheus/Grafana) are always on your radar
- Solve real problems: Working closely with Product Managers, AI Engineers and other engineering teams, you translate business requirements into technical solutions that actually ship - pragmatic, impactful and user-focused. Good UX starts in the code
- Creative freedom: You bring your own ideas to architecture decisions, component design and development processes. Your perspective shapes how our AI products look and work
Our take
Yoummday is revolutionising the way businesses approach customer service worker operations with its work-at-home operating system. This enables companies to replace call centres with freelance customer experience professionals who work from home.
The company’s global marketplace has thousands of freelancers for companies to recruit from, and is utilised by over 70 Fortune 500 and DAX-listed companies. Yoummday has seen a steady increase in professionals and companies joining the platform and has focused on growing its team and leadership whilst widening its market reach.
In 2022, Yoummday acquired multi-lingual business process outsourcer company ICON to accelerate international expansion and support expanded platform capabilities. It also became the first freelancer marketplace to achieve ISO 27001 certification in 2023, showing a strong commitment to information security.
Steph
Company Specialist at Welcome to the Jungle
Insights
23% employee growth in 12 months
Company
Funding (1 round)
Feb 2022
$35.2m
LATE VC
Total funding: $35.2m
Company HQ
Neuhausen-Nymphenburg, Munich, Germany
Leadership
Klaus Harisch
(Co-CEO & Co-Founder)A serial entrepreneur and strategist with many years of experience in the telecommunications industry and was founder of 11880 and GoYellow.
Lion Harisch
(Co-Founder)Co-founded the company after completing their Political Science studies. They are also the Founder & current CEO of DeChain Capital and Bavarian Crypto Labs.
Pablo Harisch
(Co-CEO & Co-Founder)Co-founded the company after completing their Business Law & Computer Science studies.
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