Senior Software Engineer

Senior Backend Engineer - High-Volume Fintech & Payments Platform

Location: Remote - Based in LATAM / EST /Europe

Compensation: $130K - $180K

We are a technology company building the next generation of money and financial products. We are seeking a Senior Backend Engineer to design and build the core backend systems that power our fintech and payments platform. This role requires deep technical expertise in high-scale transaction systems and strong product awareness to deliver reliable, secure, and impactful solutions.

You will be responsible for the full lifecycle of our backend services, focusing on architecting, building, and operating systems that handle high-volume financial transactions securely and reliably. You will act as a technical leader, driving feature delivery and raising the engineering bar across the team while ensuring our systems align with business priorities.

Key Responsibilities:

• Build & Operate: Build and operate scalable backend services using Node.js/TypeScript and PostgreSQL.
• API Design: Design robust APIs that power financial transactions, ensuring idempotency, reliability, and a developer-friendly experience.
• Architecture: Architect solutions for complex challenges across core domains, including payments, ledgering, and reconciliation.
• Feature Delivery: Lead feature delivery from design through implementation, testing, and deployment.
• Code Quality & Mentorship: Review code and mentor peers, maintaining high standards for maintainability and quality across the codebase.
• Production Reliability: Investigate and resolve production issues with a focus on root cause prevention.

How You'll Work:

• Treat APIs and services as products, balancing developer experience with robustness.
• Favor simplicity and clarity in architecture while planning for scale and resilience.
• Keep security and compliance top of mind in all technical decisions.
• Document designs, runbooks, and decision records for effective knowledge sharing.

• Experience: 5+ years of backend software engineering experience.
• Core Stack: Strong expertise in Node.js, TypeScript, and relational databases (PostgreSQL preferred).
• Domain Expertise: Proven experience building APIs that power financial or transactional systems.
• Fintech Knowledge: Understanding of payments, fintech, or other transaction-heavy domains.
• Systems Design: Experience designing for scalability, reliability, and fault tolerance.
• Distributed Systems: Familiarity with distributed systems concepts (e.g., idempotency, concurrency, data integrity).
• Communication: Excellent communication skills and ability to collaborate across product, design, and infrastructure teams.

Tools You'll Use:

• Node.js / TypeScript, NestJS (or similar backend frameworks).
• PostgreSQL, REST APIs.
• GitLab, Docker, Kubernetes, AWS.
• Monitoring and observability tools (e.g., Datadog).

Preferred Experience (Nice to Have):

• Experience with blockchain development (e.g., smart contracts, wallets, tokenization).
• Infrastructure knowledge: Kubernetes, AWS, Terraform.
• Exposure to event-driven architectures and real-time transaction systems.