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Senior Software Engineer - Backend API Engineering

PactFi

PactFi

Software Engineering
New York, NY, USA
Posted on Dec 10, 2025

Key Responsibilities

Backend API Development & Optimization

  • Design, build, and maintain RESTful APIs using PHP Laravel to support PactFi’s financial workflows, partner onboarding, and investment operations.
  • Ensure APIs are secure, scalable, fault-tolerant, and optimized for low latency.
  • Implement API versioning, documentation, and automated testing.

Third-Party Integrations & Middleware

  • Develop integrations with financial data providers, custodians, broker-dealer systems, KYC/AML services, payment processors, and CRM platforms.
  • Build workflows for data synchronization, event processing, and multi-system orchestration.
  • Develop middleware solutions to normalize, validate, and transform financial data across external APIs and PactFi systems.

Database & Data Management

  • Design and optimize relational databases (MSSQL or MySQL) for investment data, partner information, and operational workflows.
  • Ensure strong data governance, auditability, and compliance with financial-sector data requirements.
  • Build data-layer tools for secure and reliable data movement.

Security, Compliance & Access Control

  • Implement secure authentication & authorization: OAuth2, JWT, API keys.
  • Develop and maintain role-based access controls (RBAC) aligned with financial industry requirements.
  • Conduct security audits, vulnerability assessments, and compliance reviews.
  • Enforce encryption and secure handling of sensitive financial and customer data.

Qualifications

Required

  • 5+ years of backend development experience with PHP Laravel.
  • Strong expertise in RESTful API architecture and distributed backend systems.
  • Experience integrating with external APIs (financial systems, CRMs, payment platforms, KYC/AML providers).
  • Strong database skills with MSSQL, MySQL, and caching systems such as Redis.
  • Proficiency with automated testing frameworks and API monitoring.
  • Strong debugging, performance tuning, and problem-solving ability.