[Hiring] Lead Software Engineer @Alternative Payments

Role Description

We’re looking for a Lead Software Engineer to help set the technical direction of Alti, our AI agent product. Alti launched in July 2026 and has moved past MVP. The next step is scaling it into a core product of our platform: more agents, more automated routines, and our own machine learning models alongside LLMs.

You’re a product engineer who has built AI features in production and can raise the bar for the whole squad. You’ll own technical decisions across Alti, define how we evaluate and monitor AI features, and become a reference for AI across our product teams. This is a technical leadership role, not a people management role.

This is a remote position based in Brazil.

What You’ll Do

• Own the technical direction of Alti features, from conversational AI to agents and automated routines.
• Define the standards for LLM evaluation, prompt management, monitoring and observability.
• Lead the design of RAG pipelines and agent architectures, and make the trade-off calls.
• Drive the move from LLM-only features to proprietary ML models, including taking them to production with monitoring and continuous feedback.
• Identify new ML use cases across the AP platform (e.g., invoice payment prediction) and shape them with Product.
• Act as a reference for AI inside the product org: review designs, pair with engineers and share practices.
• Keep shipping hands-on: this role writes code every week.

Qualifications

• Strong experience as a software engineer, with a track record of owning technical decisions on product features end to end.
• Hands-on work on AI products in the last 12 months (LLMs, agents, AI features), with ownership of meaningful parts of the system.
• Experience with chatbots/conversational AI, RAG and LLM evaluation pipelines.
• Strong skills in at least one of Go, TypeScript/JavaScript or Python.
• Autonomy to define a process in a new area, not only execute one.
• A product mindset: you care about what gets delivered to users, not only the model.
• Comfort in a fast-paced environment where you own many parts of the delivery chain.
• Professional working proficiency in English.

Nice to Haves

• Experience putting ML models into production with monitoring and feedback loops.
• AI monitoring and observability tooling.
• Prompt engineering experience.
• Autonomous or personal agents working across channels (Slack, Teams, WhatsApp).
• Background in fintech, payments or financial products.
• Experience at both an early-stage startup (Seed to Series B) and a larger tech company.

What We Offer

• Competitive salary tailored to your experience, skills, and expertise.
• The total compensation range for this role is $100,000 - $120,000, plus equity.
• Equity opportunities so you can share in our growth and success.
• Unlimited PTO and flexibility when you need it the most.
• Yearly learning & development stipend to help you grow and do your best work.

Why Choose Alternative Payments?

• Own your impact: Lead meaningful, high-impact projects and collaborative initiatives that are shaping the future of FinTech and redefining how businesses get paid.
• Collaborate: Work with a diverse, innovative team where every voice is heard and great ideas come from anywhere.
• Grow with us: Your career journey is top of mind. We prioritize internal growth and give you the space to shape your path based on your goals.
• Thrive in a supportive culture: As a scaling start-up, there’s a lot to be done and initiative is key.

Our Values

• Transparency & Honesty: We communicate openly and truthfully with partners, investors, and each other.
• Resourcefulness & AI: We stay scrappy, find creative solutions, and make progress even when the path isn’t obvious.
• Partnership: We win and lose together. We collaborate with our partners, investors, and teammates.
• Revolutionary & Boldness: We challenge conventions, take calculated risks, and build better solutions.
• Accountability: We take ownership of our decisions and results.

Applying to Alternative Payments

We’re looking for candidates who are ready to step in and make an impact from day one. If you’re excited about the role, bring relevant experience, and are ready to contribute, we want to hear from you!

All resumes are reviewed by our small but mighty talent team. We’re also committed to an inclusive and accessible process. If you need any accommodations during your application or interview experience, please let us know — we’re happy to help.