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Senior Node.js Engineer — Outcode Software, Lima (Hiring Now)

Senior Node.js Engineer


Job description

Description

We’re looking for a Senior Node.js Engineer to own, maintain, and scale mission-critical, production-grade fintech and banking applications.

In this role, you will be responsible for shipping robust backend services, managing complex ledger systems, and handling high-stakes financial data pipelines where data integrity and production discipline are non-negotiable.

Operating as a senior technical contributor, you will thrive in an environment that values deep technical ownership, elegant backend engineering over hype, and a meticulous approach to financial system architecture.

Responsibilities

You’ll work closely with internal stakeholders and external banking infrastructure to deliver reliable, production-ready, and 100% quality-driven code for high-volume transaction processing and core ledger systems.

Development, Maintenance & Operations

  • Maintain, troubleshoot, and enhance core backend services utilizing Node.js within a modular monolith architecture.
  • Write, optimize, and maintain complex PostgreSQL queries, ensuring strict data integrity through proper use of transactions, locking, and isolation levels.
  • Own and enforce production discipline by implementing structured logs, monitoring system health via CloudWatch, and ensuring critical financial hot paths are completely resilient.

Project Lifecycle, API Integrity & Integrations

  • Integrate and maintain robust connections against core banking platforms and infrastructure vendors (such as Unit, Increase, Treasury Prime, FIS, Fiserv, etc.), managing diverse authentication flows and specifications.
  • Significantly enhance and operate our production double-entry ledger system, ensuring flawless execution of journal entries, debit/credit accounting, and balance derivation.
  • Support financial workflows with extreme precision, managing settlement processing, holds, releases, reversals, adjustments, and automated reconciliation processes.

Infrastructure & Compliance

  • Navigate and operate cloud infrastructure efficiently within AWS (utilizing IAM, RDS, CloudWatch, managed services, and security best practices).
  • Ensure system architectures and workflows rigorously align with compliance expectations, keeping in mind SOC 2 environment requirements and banking regulations (KYC, BSA/AML, sanctions screening, and GLBA).
  • Manage multi-rail deposit systems (ACH, Wire, Crypto) and external financial integrations with minimal supervision.

Qualifications

  • Strong Node.js Expertise: 5+ years of professional experience shipping scalable, highly reliable backend services to production environments.
  • PostgreSQL Fluency: Expert-level experience with relational databases in production, including advanced query optimization, transaction management, locking strategies, and data integrity enforcement.
  • Ledger & Financial Discipline: Hands-on experience building, operating, or scaling production double-entry ledger systems with real-world knowledge of handling balance derivation and reconciliation challenges.
  • Domain Experience: Prior experience in fintech, payments, neobanking, or digital wallets, including a solid grasp of ACH processing and settlement workflows.
  • AWS & Compliance Familiarity: Strong understanding of AWS infrastructure and security best practices within a regulated SOC 2 environment.
  • Leadership & Mindset: Experience serving as a technical lead, providing constructive code reviews, mentoring peers, and effectively communicating technical concepts to engineering, product, and business stakeholders.

You'd be a poor fit if:

  • You view double-entry accounting as just simple database entries and underestimate the complexity of race conditions, ledger locking, and real-time balance derivation.
  • You prefer chasing the latest trending framework over maintaining the stability, integrity, and scale of a production modular monolith.
  • You ship financial logic updates or structural backend changes without updating the relevant system documentation.
  • You prefer working in isolation rather than mentoring team members and collaborating across engineering and business teams.

What you’ll love about us

  • A fast-growing company with meaningful, mission-critical financial infrastructure projects.
  • An international, collaborative work environment that values deep technical expertise and engineering discipline.
  • A healthy work-life balance with a structured 5-day work week.

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Required Skill Profession

Computer Occupations


  • Job Details

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Unlock Your Senior Node Potential: Insight & Career Growth Guide


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