Staff ML Engineer

4 semanas atrás

Brazil Yuna.io Tempo inteiro

Company Description

Yuna's mission is to radically transform the way mental health support is accessed and delivered. By providing 24/7 instant and private support at the push of a button, we aim to address the significant gaps in mental health care accessibility. In a system where waiting times for therapists can reach up to 48 days and many people can't even afford care, Yuna is the answer to immediate mental health support needs.

We’re growing quickly, and every person who joins us plays a pivotal role in shaping the future of mental health technology.


Position Overview

You’ll own Yuna’s core conversational intelligence (i.e. spanning retrieval, memory, safety, evaluation, and post-training). You’ll ship user-visible improvements quickly while raising the bar on empathy, reliability, and guardrails. This is a hands-on staff-level role: equal parts research-to-production and platform thinking.


What you’ll do

  • Lead the end-to-end model lifecycle of Yuna’s conversational AI: problem framing → data curation → modeling/fine-tuning/post-training → evals → rollout → monitoring
  • Work closely with clinical psychologists (both internal and external to Yuna), ensuring the efficacy of Yuna’s conversational AI
  • Design agentic flows (tool use, planning, multi-turn memory) and safe retrieval for mental-health use cases
  • Build and own the evaluation flywheel: benchmarks, judge models, rubrics for conversational quality, ability to help, safety
  • Implement alignment & safety layers (e.g., self-harm detection, red-teaming, refusal strategies, escalation paths) tuned to clinical guidelines
  • Optimize for latency, cost, and quality
  • Partner tightly with product, sales, and users to scope new features and
  • Establish LLMOps: datasets, prompts/checkpoints/versioning, observability, drift monitoring, and incident response for model quality


What you’ll bring

  • 5+ years in ML/AI with 3+ shipping LLM/NLP systems in production
  • Deep skill in Python and modern deep learning stacks (PyTorch/JAX/TensorFlow), retrieval/RAG, embeddings, reranking, and long-context summarization
  • Experience building agentic systems (tool calling, decomposition, memory) and rigorous eval harnesses (offline + online)
  • Strong product sense; you care about user outcomes, not just model metrics
  • Comfort working with ambiguity and creating systems 0 to 1


Location: Remote (work from anywhere, with at least 6 hours overlap with PST)

Employment Type: Full Time


What We Offer

  • Competitive salary (based on experience) + equity options
  • Remote-first culture with flexibility
  • A fast-growing, talented, and empathetic team dedicated to transforming mental health care
  • The opportunity to make a real impact on the world, building cutting-edge AI systems that improve lives every day

  • Staff Software Engineer

    2 semanas atrás

    Brazil Signify Technology Tempo inteiro

    Job Title: Staff Software Engineer Job Type: Contract Contract Length: 6–12 months (with strong potential for extension) Rate: Competitive hourly rate (USD) — based on experience Role Location: Remote (LATAM) — must be able to work PST hours The Company: A fast-growing AI technology company building backend systems that enable clinical and operational...

  • Staff ML Engineer

    4 semanas atrás

    Brazil Yuna.io Tempo inteiro

    Company DescriptionYuna's mission is to radically transform the way mental health support is accessed and delivered. By providing 24/7 instant and private support at the push of a button, we aim to address the significant gaps in mental health care accessibility. In a system where waiting times for therapists can reach up to 48 days and many people can't...

  • Staff Software Engineer

    2 semanas atrás

    Brazil Signify Technology Tempo inteiro

    Job Title:Staff Software EngineerJob Type:ContractContract Length:6–12 months (with strong potential for extension)Rate:Competitive hourly rate (USD) — based on experienceRole Location:Remote (LATAM) — must be able to work PST hoursThe Company:A fast-growing AI technology company building backend systems that enable clinical and operational tools used...

  • AI Engineer

    2 semanas atrás

    Brazil AllianceIT Inc Tempo inteiro

    This position is a full-time remote position to work from LATAM with US clients. We offer: 100% Remote Work $28-30 USD per hour Title: AI Engineer We are seeking an experienced AI Engineer to serve as a trusted technical advisor to our customers and help solve complex machine learning challenges. You will provide expert guidance on practical ML...

  • Machine Learning Engineer

    2 semanas atrás

    Brazil Flatiron Software Tempo inteiro

    AboutFlatiron is a global remote software development company with engineers located around the world. We unite experts from diverse backgrounds and experiences in a collaborative culture to deliver exceptional products and services for our clients. As a forward-thinking software engineering company, we provide industry-leading solutions to complex problems...

  • Machine Learning Engineer

    2 semanas atrás

    Brazil Flatiron Software Tempo inteiro

    About Flatiron is a global remote software development company with engineers located around the world. We unite experts from diverse backgrounds and experiences in a collaborative culture to deliver exceptional products and services for our clients. As a forward-thinking software engineering company, we provide industry-leading solutions to complex problems...

  • Machine Learning Engineer

    2 semanas atrás

    Brazil Flatiron Software Tempo inteiro

    AboutFlatiron is a global remote software development company with engineers located around the world. We unite experts from diverse backgrounds and experiences in a collaborative culture to deliver exceptional products and services for our clients. As a forward-thinking software engineering company, we provide industry-leading solutions to complex problems...

  • Machine Learning Engineer

    4 semanas atrás

    Brazil Bizmoni - The Next Gen AI Super APP Tempo inteiro

    Location:  Fully remoteEmployment type:  Part-time About Bizmoni Corp. Bizmoni is the worlds first AI Super App designed to help anyone earn, learn, and grow in the AI era. We are building a global, fully remote team to shape the future of financial technology. Our mission is to make powerful AI-driven financial and business tools accessible to everyone...

  • Machine Learning Engineer

    4 semanas atrás

    Brazil Bizmoni - The Next Gen AI Super APP Tempo inteiro

    Location: Fully remoteEmployment type: Part-time About Bizmoni Corp. Bizmoni is the worlds first AI Super App designed to help anyone earn, learn, and grow in the AI era. We are building a global, fully remote team to shape the future of financial technology. Our mission is to make powerful AI-driven financial and business tools accessible to everyone...

  • Staff Engineer Frontend

    4 semanas atrás

    Brazil Remessa Online Tempo inteiro

    Sua carreira com liberdade e propósito 🌏Na Remessa Online, não se trata apenas de transferências internacionais, criamos conexões que rompem fronteiras e transformam realidades. Somos movidos pela ousadia, respeito, colaboração, encantamento e responsabilidade.Nosso segredo? Trabalhar juntos com transparência, comprometimento e autonomia, sempre...