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FitNext Co.

20 jobs

Posted Sort

20 jobs Posted Sort

Brazil - Senior ML Engineer (BRA)

NewBe an early applicant RemoteLATAMFull-timeSenior

Senior ML Engineer at a VC-backed AI/ML startup building a foundation model for automated software delivery in embedded control systems. Day to day: research, develop, and production-deploy the model with focus on performance, optimization, and ML infrastructure (large-scale training, CUDA, cloud). Remote within Brazil; optional London relocation with visa sponsorship.

AI AWS Azure Cloud C++ +8 skills

100K – 110K €

Founding Engineer - Data Platform | SP

NewBe an early applicant LATAMFull-time

A 0→1 founding engineer role designing and building a healthcare AI company's core data platform from scratch — high-volume data infrastructure and event-driven systems serving external healthcare clients and internal analytics. Core stack includes TypeScript/Python, PostgreSQL, and MongoDB.

AI Analytics API Cloud Data Pipelines +11 skills

LATAM | Senior AI Engineer

NewBe an early applicant LATAMFull-timeSenior

Senior AI Engineer (hands-on IC) for a healthcare AI company building AI agents embedded in clinical workflows across Latin America. Day to day: fine-tuning models, building clinical knowledge systems (RAG, vector stores, knowledge graphs), and shipping/evaluating production LLM systems, primarily in Python.

Agentic AI AI Fine Tuning LLM Python +1 skills

Python Quantitative Developer

New RemoteLATAMFull-time

Senior Python engineer who owns the production code behind an investment-risk scoring platform for financial advisers. Day to day: building and validating risk calculations in an existing Python/Django app (pandas, NumPy, SQL), debugging score anomalies, and adding automated CI validation. Fully remote across Latin America, paid in USD.

Analytics CI/CD Django NumPy pandas +3 skills

Founding Software Engineer (San Francisco, CA)

New North AmericaContract

Founding engineer at an early-stage AI-powered observability startup in San Francisco, working across applied AI, full-stack development, infrastructure, and production support — building AI agents and scaling a telemetry engine to automate OpenTelemetry instrumentation and production debugging. Pays $250k–$400k plus 0.25%–2% equity.

Agentic AI AI Observability OpenTelemetry

250K – 400K $

Founding Business Development Representative

Founding Business Development Representative (BDR) Location: Remote - LATAM Compensation: Fixed salary + commission, paid in USD Company Overview FitNext Co. connects talented professionals across Latin America with…

AI Business Development Linkedin Sales Navigator

LATAM Senior Backend/Infrastructure Engineer

New RemoteLATAMFull-timeSenior

Remote (LATAM) senior backend/infrastructure engineer owning backend and cloud infrastructure for a YC pre-seed AI voice platform startup serving real estate and home services. Day to day: Python/Django services, Docker and Kubernetes on AWS EKS, CI/CD, production reliability, and scaling self-hosted voice AI with LiveKit/telephony integrations.

AI AWS CI/CD Django Docker +9 skills

6K – 9K $ / mo

Senior Software Engineer - Python / TypeScript

New RemoteNorth AmericaContractSenior

3-month fully remote contract for a senior engineer on an AI/LLM project: designing evaluation rubrics, reviewing preference data quality, and building data pipelines in Python or TypeScript/JavaScript/Golang. Pays $100/hour for 20+ hours/week with at least 4 hours of PST overlap.

AI Go JavaScript LLM Model Evaluation +2 skills

100 – 100 $ / hr

Mid-Senior Account Executive

RemoteContractSenior

LATAM Mid-Senior Account Executive Location: LATAM Work Type: Remote Employment Type: Full-Time Contractor Experience: 5+ years in quota-carrying Account Executive / closing roles Compensation: $4,000/month FitNext…

Account Executive Business Development CRM HubSpot Pipeline Management +1 skills

QA & AI Evaluation Engineer (São Paulo, SP)

HybridLATAMFull-time

A QA engineer will build and own the entire quality function at a Series A AI startup, creating automated test coverage (Python/TypeScript, Playwright/Cypress, CI/CD pipelines) and designing ways to evaluate non-deterministic AI/LLM outputs. Hybrid role based in São Paulo, 3 days/week in office.

Agentic AI AI API CI/CD CRM +7 skills

5K – 6K $ / mo

Senior Staff Software Engineer

Open 16d RemoteNorth AmericaFull-timeStaff

Senior/Staff engineer building rendering-intensive interactive learning components (closer to game-engine work than typical web apps) for an edtech client's graphical AI tutor. Mostly Elm with significant TypeScript, focusing on Canvas/browser performance, expressive component APIs, and AI-enabled engineering workflows.

AI API Game Development Haskell TypeScript

180K – 250K $

Playable Game Developer

Open 17d RemoteLATAMFull-time

Builds polished HTML5 playable browser games from advertiser briefs end to end — concept, implementation, assets, testing, and variations — fully remote across Latin America. Core stack is JavaScript/TypeScript with browser-game frameworks like Canvas, PixiJS, Phaser, Three.js, PlayCanvas, or Cocos Creator, plus AI-assisted workflows.

AI C# Game Development Git HTML +6 skills

5K – 8K $ / mo

Senior Backend Engineer

Open 23d On-siteMENASenior

United Arab Emirates

Backend Engineer — TypeScript (Crypto) Location: Dubai, UAE (On-site) or Europe (Remote) Relocation: Support available About the Role We are partnering with a regulated financial technology company building financial…

AI API Authentication Blockchain CI/CD +18 skills

Product Manager, AI Products (CAN)

Open 47d RemoteWorldwideContractSenior

Senior Product Manager leading AI product strategy and delivery for global brands, bridging client needs with technical teams to build and launch AI-driven solutions while managing scope, budgets, and executive presentations.

Agentic AI AI Stakeholder Management User Stories

100K – 175K $

Senior Integration Engineer - backend focus

Open 50d RemoteLATAMFull-timeSenior

Senior backend engineer builds and maintains integrations between a CPG automation platform and customer systems (ERP, WMS, EDI, freight) using TypeScript, APIs, and event-driven workflows.

Agentic AI API Automation EDI ERP +5 skills

7K – 10K $ / mo

LATAM Senior SAP Project Manager / Senior SAP PMO (SP, BRA)

Open 52d HybridLATAMContractSenior

LATAM Senior SAP Project Manager / Senior SAP PMO Location: São Paulo, Brazil | Hybrid Employment Type: Full-Time Experience: 10–20 Years Compensation: $4,000–$6,000/month FitNext Exclusive: No Company Overview A…

Agentic AI Cloud PMP Professional Scrum Master Program Management +3 skills

Data Engineer DBT

Open 66d RemoteLATAM

Senior Data Engineer builds and scales a modern cloud data platform using Snowflake, dbt, Airflow, SQL, and Python to power analytics and decision-making.

AI Airflow CI/CD Cloud Cloud Native +16 skills

Backend + Machine Learning Engineer

Open 75d RemoteLATAMFull-time

Designs and deploys real-time recommendation systems and ML infrastructure for a startup building AI-native consumer entertainment experiences, using scalable data pipelines and low-latency serving.

AI Data Pipelines Feature Engineering Machine Learning PyTorch +1 skills

Senior Software Engineer (AI / Distributed Systems) (BRA)

Open 85d RemoteLATAMFull-timeSenior

Senior Software Engineer role at an AI startup building LLM and agent-based infrastructure, working on distributed systems, APIs, and data pipelines across research and production environments. Uses languages like Python, Go, TypeScript, or Node.js with cloud platforms (AWS/GCP) and Kubernetes.

AI API AWS Cloud Data Pipelines +9 skills

7K – 10K $ / mo

Sr. Product Designer

Open 85d RemoteLATAMSenior

Senior Product Designer creates AI-native, high-craft digital experiences for clients, leading end-to-end design from strategy to pixel-perfect execution while communicating insights to stakeholders.

Agentic AI AI Figma LLM SaaS +1 skills

6K – 10K $ / mo