Senior Product Engineer, Treasury (Elixir)

Jobgether; United States; Remote; USD 140,000 - 240,000; Full time

Benefits offered by this job

Equity

Remote-first

Health coverage

Flexible schedule

AI tooling budget

Job summary

Jobgether is seeking a Senior Product Engineer, Treasury (Elixir) for a fully remote US-based role operating on Eastern Time hours. You'll own key treasury features, design robust backend services with Elixir/Phoenix, and drive end-to-end delivery in a small, senior team.

Join an AI-powered finance platform shaping payments, treasury, and financial operations. You will collaborate with founders across treasury, product, and data/AI, using Claude Code to boost productivity and craft scalable,

Qualifications

• 5+ years of professional software engineering experience.
• Strong Elixir/Phoenix production experience.
• Experience owning features end-to-end from backend to frontend.
• Fluent English communication with stakeholders.

Responsibilities

• Own treasury product features across the full SDLC, from discovery to production.
• Design, build, deploy Elixir/Phoenix services and APIs.
• Scale core treasury services for high-volume financial transactions.
• Contribute to architectural standards and engineering practices.
• Collaborate with founders and senior teams to shape direction.
• Use Claude Code to improve productivity and quality.
• Develop infrastructure enabling AI-driven expenses and travel.
• Ensure observability and reliable production systems.
• Refine engineering workflows and code review processes.

Skills

Elixir

Phoenix

PostgreSQL

Kubernetes

CI/CD

Distributed systems

Concurrency

Claude Code

AI tools

English fluency

Tools

Python

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Product Engineer, Treasury (Elixir) based in the United States.

Join an innovative engineering team building an AI-powered finance platform that transforms how enterprises manage payments, treasury, and financial operations. As a Senior Product Engineer, you will design and scale the core services behind a treasury platform handling billions in transaction volume. Your work will help enable next-generation financial workflows, including AI agents that initiate corporate expenses, manage travel, and use payment cards. Working closely with founders and a small, senior team across engineering, product, treasury, and data/AI, you will shape product direction and technical architecture. This hands-on role combines deep Elixir expertise with end-to-end product ownership, from defining requirements and building interfaces to operating reliable production systems. The position is fully remote for US-based candidates working Eastern Time hours, with significant autonomy and opportunities to influence the future of financial technology.

Accountabilities

As a Senior Product Engineer, you will take ownership of critical treasury product capabilities, building reliable backend services and complete user-facing features. You will contribute to technical strategy, establish strong engineering practices, and help deliver resilient systems that support increasingly sophisticated financial workflows.

• Design, build, deploy, and operate Elixir and Phoenix services, including APIs, data pipelines, and asynchronous processing systems.
• Own product features throughout the entire software development lifecycle, from problem discovery and requirements definition to backend implementation, frontend delivery, and production operations.
• Develop and scale core treasury services that support high-volume financial transactions and emerging AI-driven spending workflows.
• Build and improve infrastructure that enables AI agents to initiate corporate expenses and travel, as well as create and use payment cards.
• Prioritize reliability across critical Tier 0 and Tier 1 systems through robust observability, monitoring, and operational practices.
• Collaborate directly with company founders and senior colleagues across treasury, product, engineering, and data/AI to shape product direction and technical decisions.
• Use AI-assisted development tools, particularly Claude Code, to improve engineering productivity and support high-quality implementation.
• Help establish and refine architectural standards, engineering workflows, development practices, and code review processes.
• Contribute to a collaborative engineering culture focused on end-to-end ownership, maintainability, and dependable production systems.

Requirements

• Be based in the United States and able to work Eastern Time hours in close collaboration with the treasury team.
• Have at least 5 years of professional software engineering experience.
• Demonstrate strong hands-on experience developing and operating production applications with Elixir and Phoenix.
• Be comfortable owning features end-to-end, from product framing and requirements through backend services, frontend implementation, and production support.
• Have a solid understanding of distributed systems, concurrency, and asynchronous processing.
• Possess strong PostgreSQL skills and practical experience with cloud infrastructure, Kubernetes, and CI/CD pipelines.
• Demonstrate fluent, day-to-day use of AI coding tools, particularly Claude Code, in real software development workflows.
• Communicate clearly with both technical and non-technical stakeholders.
• Have fluent English communication skills.

Nice-to-have Qualifications

• Experience with Python or other backend programming languages.
• Background in payments, treasury, fintech, or related financial technology domains.
• Familiarity with event-driven architectures, message queues, and workflow orchestration.
• Exposure to AI- or machine learning-powered products.

Benefits

• Competitive compensation: Salary package designed to reflect experience and expertise.
• Meaningful equity: Opportunity to participate in the company's growth and success.
• AI tooling budget: Extensive resources for AI-assisted development and engineering productivity.
• Generous paid time off: Support for rest, personal commitments, and work-life balance.
• Remote-first flexibility: Fully remote work with a flexible schedule, aligned with Eastern Time collaboration.
• Health and wellness: Comprehensive health coverage and wellness benefits.
• Autonomy and ownership: Direct influence over product direction, architecture, and engineering decisions.
• Innovative technical environment: Opportunity to build advanced payment and treasury infrastructure, including AI-driven financial workflows.
• Inclusive culture: A commitment to diversity of thought, culture, and background, with equal employment opportunities.