--- title: 'Senior AI Engineer, Ops Labs at Felix Technologies, Inc.' canonical: 'https://feeny.ai/job/senior-ai-engineer-ops-labs-felix-technologies-inc-sao-paulo-mcfd3cw4h75j' type: 'job' last_seen: '2026-11-09' --- # Senior AI Engineer, Ops Labs at Felix Technologies, Inc. - **Company:** Felix Technologies, Inc. - **Location:** São Paulo, Brazil - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-11-06 - **Last confirmed live:** 2026-11-09 - **Apply:** https://jobs.gem.com/felix/am9icG9zdDoj_8CoEM-qneSBKAuDQFUL ## Job description ## About Us At [Félix](https://felixpago.com/), we are building the indispensable financial companion for Latinos in the US. We combine an AI-powered, conversational-first interface with real-time financial infrastructure to make cross-border money movement as easy as sending a text. Starting with fast, affordable remittances powered by AI and crypto rails, we are expanding into credit, savings, and wallet services to support the complete immigrant financial journey. Our ambition is to deliver a white-glove financial experience with the simplicity of a conversation to a community the traditional financial system has historically overlooked. We are a hyper-growth Series C company, backed by over $300 million in funding from top-tier global investors, including Andreessen Horowitz, QED, Castle Island, Switch Ventures, HTwenty, Monashees, General Catalyst Customer Value Fund. This isn't just about the numbers; it's a testament to the trust our investors have in our vision and our team. Additionally, Félix was selected as an “Endeavor Entrepreneur” and was a recipient of the CrossTech Fintech Startups Award. Joining Félix means you will be part of a team building a legacy, a company that will outlive us all. This is a rare opportunity to apply your skills to a deeply meaningful mission—serving a community that has been underserved for too long because we are obsessed with our customers. We get things done with urgency and focus, driven by extreme ownership over our impact. We collaborate without ego, fostering radical transparency and fierce loyalty so we can grow together. Because we aim for insanely great rather than just good enough, we stay insatiably curious—always experimenting, building the future today, and delivering a product that truly makes our users' lives better. ## About the Role We are seeking a proactive and highly skilled AI Engineer to join our core AI team to work solely on Ops Labs. This role is central to Félix's next phase of growth, focusing on designing, building, and scaling autonomous AI Agents that will integrate directly into our product and internal operations. We are building a world-class AI team and believe great talent comes in various shapes. We are open to hiring at the Semi-Senior, Senior, or Staff level. We will calibrate your role, title, and compensation package based on your technical depth, architectural ownership, and the scope of impact you've historically delivered. You will be instrumental in evolving our internal AI ecosystem, leveraging the productivity and impact in the CX Operations team, by designing and developing the end-to-end strategy and use cases that rely on AI to automate and scale our operations. You will work particularly close with the Head of Ops Labs to surface and scope AI opportunities across the full system, address operational problems, design AI-powered solutions that automate while giving CX Ops agents visibility and authority, and validate impact before scaling. You'll learn the agent workflow and the managerial landscape, to map both onto technical feasibility. Your work will directly enable CX Ops agents to strengthen customer relationships. You'll balance technical elegance with operational constraints and help design evaluation frameworks that measure business outcomes alongside technical quality. Also, you will partner closely with AI leads, as well as with other engineering teams and PMs to translate our AI strategy into a tangible roadmap and bring it to life. This is a unique opportunity to apply a bias toward action and an experimentation spirit to solve deeply meaningful, real-world problems for Latin immigrants in the U.S. If you thrive in a rapid-iteration environment and want to build the infrastructure that powers a hyper-growth fintech, this is your mission. ## What You’ll Own - Ops-Integrated AI Solutions: Partner with Ops leadership to transform operational friction into AI-assisted workflows. Design end-to-end solutions that span: predictive triggers, LLM-powered categorization, decision automation, and alert systems. - Production-Grade Agent Architecture: Architect, ship, and maintain stateful AI agents that take real actions in ops workflows: calling tools, moving cases between queues, and carrying state across a case’s full lifecycle. You’ll use Python and modern frameworks (Google ADK, LangGraph, CrewAI, etc.), and the bar is shipped AI agents that handle real edge cases. - LLMOps & Observability: Establish production monitoring for agentic workflows. Implement tracing and observability (e.g., LangSmith, Arize Phoenix, or Weights & Biases) to track reasoning paths, tool-calling success rates, and latency bottlenecks. - End-to-End Production Integration: Lead the integration of AI agents into ops systems (CX platform, compliance and hold queues, transaction tooling) with least-privilege access. Own the full lifecycle, from containerization (Docker/Kubernetes) to CI/CD deployment and post-launch stability. - Advanced Evaluation Pipelines: Move beyond basic metrics. Design automated "evals-as-code" using LLM-as-a-judge, semantic similarity testing, and adversarial benchmarking to ensure agent safety and groundedness before every release. This includes trajectory evals that check whether an AI agent called the right tools in the right order, plus business metrics like resolution time, escalation rate, and CX agent override rate. - Performance & Cost Engineering: Optimize RAG pipelines and agent loops for production constraints. Implement caching strategies, prompt compression, and model routing to balance inference costs with high-performance requirements. - Technical Leadership: Mentor junior engineers on software craft. Drive best practices in asynchronous programming, error handling for non-deterministic outputs, and structured data validation (Pydantic, etc.). - Human-in-the-Loop & Autonomy Design: Define what each AI agent does on its own, what it only recommends, and what it never touches. Build confidence thresholds, escalation to CX agents, approval gates for irreversible actions, and audit trails for every decision. ## Requirements - Experience: 5+ years of hands-on experience in software engineering, with at least 2 years dedicated to building and deploying production-grade AI/ML applications, specifically focused on Large Language Models (LLMs) or generative AI. - Technical Mastery: Mandatory expertise in Python and deep familiarity with at least one core LLM API or framework (OpenAI SDK, Google AI SDK, CrewAI, LangChain, etc.). - Agentic System Knowledge: Proven experience shipping AI agents to production that take actions, not just answer questions. This includes tool calling, multi-step orchestration, state management, human-in-the-loop escalation, guardrails, and failure handling (fallbacks, rollback). RAG and vector databases are a plus. - Engineering Fundamentals: Strong understanding of software development best practices, version control (Git/GitHub), and CI/CD pipelines. Experience with personal projects or demonstrable contributions on GitHub is a strong plus. - Operational Rigor: Demonstrated ability to translate ambiguous operational briefs into testable hypotheses. Comfortable with incomplete specs, can ask clarifying questions about success metrics, and understand trade-offs between technical sophistication and operational constraints. Experience validating assumptions via experiments. - Execution & Communication: Proven ability to translate high-level business needs into concrete, maintainable, and well-tested code. - Ops Experience: Experience building AI for CX, support, compliance, or other operations teams. Familiarity with ops metrics like AHT, FCR, CSAT, and SLA is a strong plus. - These are the applicable requisites, although equivalent competencies in any of the above will also be considered. ## What We Offer - Competitive salary - Initial stock options grant - Annual performance bonus - Unlimited PTO - Paid parental leave - Work model: currently fully remote, with a future transition to a hybrid setup - Health, dental, and vision plans - Continuous learning opportunities - Empowering opportunities for growth in a dynamic entrepreneurial environment ## Equal Opportunity Employer At Félix, we are committed to providing equal employment opportunities to all qualified employees and applicants without regard to race, religion, nationality, sex, sexual orientation, gender identity, age, or disability. This policy applies to all terms and conditions of employment, including recruitment, hiring, placement, promotion, training, compensation, benefits, and termination. Want to learn more about our privacy practices? Check out our [Privacy Policy](https://www.felixpago.com/en/legal). ## About Felix Technologies, Inc. ## Company Overview - **One-liner**: Félix is an AI-powered financial services platform that enables Latino immigrants in the U.S. to send money to Latin America via WhatsApp and is expanding into broader cross-border financial products. - **Entity Type**: Private (Series B) - **Headquarters**: San Francisco, California, United States (also operates with a remote HQ model) - **Founded**: 2021 - **Founders**: Manuel J Godoy (Co-Founder & CEO), Bernardo Garcia (Co-Founder) ## Core Business - **Primary Industry**: Financial Services – Remittances and cross-border payments. - **Target Customers**: B2C – Latino immigrants in the United States sending money to family in Latin America (Mexico, Guatemala, Honduras, El Salvador, Colombia, Ecuador, Peru, and more). - **Mission / Purpose**: To build the financial companion for Latino immigrants in the United States, starting with remittances and expanding into the broader financial life that follows. ## Products & Services - **Félix WhatsApp Chatbot**: Core product – an AI-powered chatbot integrated into WhatsApp that allows users to send money to Latin America in three steps. No app download required. Supports payments via credit/debit card or cash, with recipients receiving funds in bank accounts or via store pickup. - **Broader Financial Services (in development)**: Félix is expanding beyond remittances into additional financial services for Latino immigrants, including managing money across borders with trust, speed, and simplicity. ## Market Standing - **Valuation**: Not publicly disclosed. - **Key Metric**: Total Funding – $99.5M (as of May 2025) across six rounds (Pre-Seed, Seed, Series A, Series B). Annual Revenue reported at $1.5M. - **Notable Investors/Partners**: QED Investors (led Series B), Castle Island Ventures (led Series A), Switch Ventures (led Pre-Seed), HTwenty, Monashees, General Catalyst Customer Value Fund. - **Growth Signals**: - Processed over $6B in transactions since inception. - Headcount grew ~99.2% year-over-year to 261 employees (across 15 countries). - Expanded services to Guatemala and Honduras after initial focus on Mexico. - 93 active job postings (as of late 2025/early 2026), with yearly job posting growth of +389.5%. ## Competitive Advantages - **Deeply integrated with WhatsApp**: Users can send money without leaving a chat app they already use, lowering barriers to adoption. - **Latino-built, culturally tailored**: Team understands the financial, cultural, and emotional reality of sending money home; support in Spanish, 24/7. - **Technology stack**: Combines AI, blockchain, and stablecoins to make cross-border payments faster, more affordable, and more accessible. - **Top-tier investor backing**: Over $100M from respected global fintech and crypto investors, validating the model. ## Strategic Focus - **Expansion into full financial services**: Moving beyond remittances to become the financial companion for Latino immigrants (e.g., savings, lending, credit). - **Geographic growth**: Adding new sending corridors (e.g., El Salvador, Colombia, Ecuador, Peru) and recipient countries. - **Product development**: Leveraging AI and chat-based interfaces to simplify more financial tasks. ## Why Work Here - **Culture**: Described as a hyper-growth Series B company with a “legendary” mission – a group of high-performers united by an obsession with customer empowerment. Values include inclusion, speed, and impact. - **Remote/hybrid policy**: Remote-first HQ in San Francisco, with offices in SF and distributed across 15 countries (including Mexico, Argentina, Brazil, Colombia, etc.). Offers flexibility. - **Engineering & growth**: Strong emphasis on tech (101 employees in technical roles). Active hiring for senior software engineers, data analysts, credit risk analysts, fraud specialists, and product managers. - **Notable perks**: Backed by top investors; opportunity to work on cutting-edge AI, blockchain, and stablecoin technology for a mission-driven product that serves an underserved market. ## Sources 1. [jobs.gem.com](https://jobs.gem.com/felix) – Career page and company data 2. [linkedin.com](https://linkedin.com/company/felix-pago) – Company details, workforce, and financials 3. [felixpago.com](https://www.felixpago.com/en/what-is-felix) – Product description and service regions 4. [felixpago.com](https://www.felixpago.com/en/life-at-felix) – Culture, milestones, and mission ## Other roles at Felix Technologies, Inc. - [QA Automation Manager](https://feeny.ai/job/qa-automation-manager-felix-technologies-inc-mexico-city-a2kmg6c9cg7y) — Mexico City, Mexico - [Cloud Operations Manager](https://feeny.ai/job/cloud-operations-manager-felix-technologies-inc-buenos-aires-egh7jyb13b6d) — Buenos Aires, Argentina - [Cloud Operations Manager](https://feeny.ai/job/cloud-operations-manager-felix-technologies-inc-guadalajara-gebxn168ynp7) — Guadalajara, Mexico - [Cloud Operations Manager](https://feeny.ai/job/cloud-operations-manager-felix-technologies-inc-mexico-city-2s8qz1fdgew4) — Mexico City, Mexico - [Cloud Operations Manager](https://feeny.ai/job/cloud-operations-manager-felix-technologies-inc-sao-paulo-6qk8rwqyz9hg) — São Paulo, Brazil - [Cloud Operations Manager](https://feeny.ai/job/cloud-operations-manager-felix-technologies-inc-rio-de-janeiro-hmkcaf6rfe3s) — Rio de Janeiro, Brazil - [Senior Site Reliability Engineer (Observability)](https://feeny.ai/job/senior-site-reliability-engineer-observability-felix-technologies-inc-rio-de-2e7dcxfxwbe3) — Rio de Janeiro, Brazil - [Senior Site Reliability Engineer (Observability)](https://feeny.ai/job/senior-site-reliability-engineer-observability-felix-technologies-inc-sao-paulo-49brz1qepe3q) — São Paulo, Brazil - [Senior Site Reliability Engineer (Observability)](https://feeny.ai/job/senior-site-reliability-engineer-observability-felix-technologies-inc-mexico-nds3khe2hrr8) — Mexico City, Mexico - [Senior Site Reliability Engineer (Observability)](https://feeny.ai/job/senior-site-reliability-engineer-observability-felix-technologies-inc-rxyymq40jp8r) — Guadalajara, Mexico