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
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
