# AI Engineer (Hybrid)

> WorkNomads · Sofia, Bulgaria (Hybrid) · Full-time · Posted 2026-09-01

**Workplace:** hybrid

**Department:** KAION

## Description

WorkNomads is on the hunt for an **AI Engineer** to join our team! 

**Who We Are:** 

We are building a community where global talent is geographically unleashed, and diversity is celebrated. We champion the freedom of living and working across borders, shaping a nation without a country. 

-   Remote engineering services, global impact — expert engineering, design, and business talent in cross-disciplinary project teams. 

-   Diversity celebrated — 40+ nationalities, 4 continents, one team. 

-   Continuous growth — we invest in you: projects, coliving, community, pushing you beyond what you thought possible. 

**Your mission at WorkNomads:** 

-   You'll own the real-time voice and language layer that makes Brain Buddy feel like a responsive, trustworthy companion rather than a chatbot with a lag.

-   Design, train, and fine-tune TTS and STT models that power real-time conversational interaction across multiple tools and systems, relevant to health-tech.
-   Adapt commercial speech and foundation models into low-latency, production-grade pipelines suited to live, back-and-forth user sessions.
-   Improve model accuracy, latency, robustness, and scalability under real usage load
-   Fine-tune and evaluate models against own interaction data
-   Build evaluation methodologies specific to conversational and speech quality
-   Investigate and resolve inference bottlenecks as usage scales — including planning for the cost/performance inflection points we're tracking
-   Collaborate directly with the product, data annotation, and infrastructure pods to take models from prototype to production deployment.

## Requirements

**We want to hear from you if you have:** 

-   10+ years in product development, with substantial hands-on ML engineering experience and AI foundation models
-   Proven experience training, fine-tuning, or optimizing TTS and/or STT models
-   Experience adapting commercial speech or foundation models for production use cases.
-   Strong grounding in low-latency inference architecture for live interaction systems.
-   Fluency with modern ML frameworks (PyTorch, TensorFlow, or equivalent).
-   Strong understanding of cloud deployment architectures and optimization for multi real-time systems
-   Experience with large-scale data and distributed computing environments.
-   Excellent written and spoken English; able to work independently in a fast-moving, technically ambiguous environment.
-   Bachelor's/Master's/PhD in Computer Science, AI/ML, Mathematics
-   Willingness to travel to Bulgaria ~20% of working time

## Benefits

**Perks of being one of us:**  

-   _Flexible work setup_: work fully remotely from any country in the EU on a freelance/B2B contract, or join our Sofia, Bulgaria office under a local employment contract that offers a comprehensive social welfare package. 

-   _Autonomy:_ an environment where your technical vision matters, and you own your work-life balance.  

-   _Growth_: a personalized career development program to fuel your journey; learn from experts, expand your craft, and work across industries.  

-   _Global vibe:_ an international, dynamic, remote-first workplace.  

-   _Connectivity Support:_ home office allowance

-   _Total Rewards_: paid time off and competitive remuneration. 

-   _Community_: team get-togethers and networking events are in our DNA!  

-   _Seamless Living:_ need a base? Digitally check into a spacious room at our WN LAB Hotel, Bulgaria’s biggest and coolest 4★ co-living hotel. No deposit, with special discounted rates for single apartments starting from 660 EUR/month (utilities & cleaning included!).  

-   Be part of something _beyond work:_ culture, values, impact.   

**How to Apply / What Happens Next:**  

1\. Send us your CV by hitting the “Apply” button.  

2\. You will hear from one of our Global Talent Connectors within 5 business days with the next steps.  

3\. Meet us on MS Teams and tell us what excites you.  

4\. Next stage could be a test or a task - we want to see what you DO (not just what you say)  

5\. Along this journey and depending on the role you are applying for, prepare to meet either our Chief Talent Gaucho, your future leader or our Head Honcho!   

**Want to learn more? Check us out below:**  

[**https://www.worknomads.com/**](https://www.worknomads.com/)

**Interest piqued? Join us!** 

**WorkNomads — A Nation Without a Country** 

We celebrate the right of every human to be themselves and provide opportunities for global talent to shine. Diversity, social equity, and inclusion are at the core of who we are. We create an environment where different voices are respected, heard and empowered in equal measure. We’re breaking down the boundaries by designing a new nomadic economy by enabling people to do what they love and be where they want.

## Apply

[Apply at WorkNomads](https://apply.workable.com/worknomads/j/742C38AB00/apply)

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