AI Engineer SR (CL-AIBsAs - 20250812)
Buenos Aires
Celara /
Contract /
Hybrid
Celara is a fast-growing technology company delivering transformative AI solutions for innovative startups and fast-moving enterprises. We're looking for a Senior AI Engineer who thrives in startup environments — someone who can move fast, wear multiple hats, and help architect and build AI systems from the ground up. This is a high-ownership role, ideal for a technical builder with a product mindset and a passion for figuring things out in real time.
What You’ll Do
- Start by building foundational AI capabilities and products, with opportunities to grow into leading teams and larger initiatives as they scale
- Lead the design and development of end-to-end AI applications — from prototype to production
- Work closely with founders, clients, and other engineers to shape both technical and product direction
- Build and deploy LLM-based systems, including RAG pipelines, fine-tuned models, and embedding search
- Own delivery of real-world solutions: architect, implement, test, ship
- Iterate rapidly: explore new tools, try new ideas, and solve problems creatively
- Operate with autonomy in a fast-changing environment — sometimes as the only engineer on a project
- Occasionally dive into adjacent areas like frontend, dev tooling, or data pipelines as needed
Must-Have Skills
- Strong experience with modern AI techniques — LLMs, prompting, fine-tuning, RAG, vector databases
- Strong Python engineering background, with clean, modular coding practices
- Comfortable building systems in a solo or small-team setting with limited structure
- Familiarity with cloud deployment (AWS/GCP), Docker, and production ML pipelines
- Able to balance product thinking and engineering discipline
- Startup mentality: comfortable with ambiguity, fast iteration, and wearing many hats
- Excellent communication skills — able to work directly with clients and non-technical stakeholders
Bonus Skills
- Experience in Conversational AI and Voice AI systems
- Knowledge of ML frameworks (PyTorch, scikit-learn, etc.)
- Exposure to frontend (JS/React) or dev tooling is a plus
- MLOps / CI/CD familiarity
- Prior experience in early-stage startups
Why Join Celara?
- Work on real AI problems across industries — voice, analytics, automation, and beyond
- High autonomy, high-impact role on a lean, ambitious team
- Shape both the product and technical foundation of AI systems
- Flexible remote-first culture with occasional in-person collaboration in Buenos Aires
- Competitive compensation based on experience and ability
- Continuous learning, experimentation, and exposure to cutting-edge AI tools
