Senior .Net Developer

axos; Manila; On-site; PHP 1,000,000 - 1,900,000; Full time

Job summary

Axos is seeking a highly experienced Senior Backend .NET API Developer to design, build, and optimize secure backend systems for financial services. You will work on .NET Core / ASP.NET Core APIs, microservices, and high-volume transactions, with focus on security, compliance, and reliability.

You will participate in production incident calls, own issue resolution, and drive RCAs to prevent recurrence, collaborating with QA, DevOps, and Infra to ensure uptime and fast recovery.

Qualifications

• 8–12+ years of backend development experience in financial services.
• Proven enterprise API and microservices delivery.
• Strong security, compliance, and incident management knowledge.

Responsibilities

• Participate in production incident calls and drive RCA.
• Develop and maintain RESTful APIs and microservices in .NET.
• Lead architecture design and scalability efforts.
• Ensure compliance with security standards and data protection.
• Collaborate with QA, DevOps, Infra and product teams.
• Mentor engineers and conduct code reviews.

Skills

C#

.NET Core

ASP.NET Core

Microservices

REST APIs

SQL Server

Azure

Security (OAuth2/JWT)

Incident management

Leadership

Education

Bachelor's degree in Computer Science or related

Tools

Docker

Kubernetes

CI/CD pipelines

Entity Framework

Job description

Axos Business Center, Corp

About This Job

We are seeking a highly experienced Senior Backend .NET API Developer with strong expertise in financial services platforms to design, build, and optimize secure, scalable backend systems. The ideal candidate will have deep experience in .NET Core / ASP.NET APIs, microservices architecture, and high-volume transactional systems, with a strong understanding of banking/financial domain requirements such as security, compliance, and real-time processing.

This role goes beyond development - the candidate is expected to actively participate in production incident (ITN) calls, take ownership of issue resolution, and drive root cause fixes to ensure system stability, uptime, and customer impact mitigation.

Key Responsibilities

• Production Support & Incident Management (Critical Responsibility)
  • Actively participate in ITN / production incident bridge calls and provide real-time technical troubleshooting
  • Take end-to-end ownership of production issues impacting APIs and backend services
  • Perform rapid debugging, issue isolation, and hotfix implementation during incidents
  • Drive root cause analysis (RCA) and implement permanent fixes to prevent recurrence
  • Collaborate with cross-functional teams (QA, DevOps, Infra) to restore service within SLA timelines
  • Monitor logs, metrics, and tracing tools to quickly identify production failures
  • Ensure post-incident documentation, learnings, and preventive measures are implemented
• Backend & API Development
  • Design, develop, and maintain RESTful APIs and microservices using .NET Core / ASP.NET Core
  • Build scalable backend services supporting high-volume transactions and financial workflows
  • Implement robust business logic for payments, accounts, transactions, and integrations
• Architecture & System Design
  • Lead backend architecture design focusing on scalability, security, and performance
  • Define API contracts, service interfaces, and data models
  • Design distributed systems, event-driven or microservices architectures
• Financial Domain & Compliance
  • Ensure systems comply with financial regulations, security standards, and audit requirements
  • Implement secure transaction processing and data protection strategies
  • Work with domain teams on risk, reporting, settlement, or payment systems
• Database & Data Management
  • Design and optimize relational and NoSQL databases (SQL Server, PostgreSQL, MongoDB)
  • Ensure data integrity, consistency, and performance tuning
• Integration & Collaboration
  • Integrate with external systems (e.g., payment gateways, banking APIs, third-party services)
  • Collaborate with architects, product teams, QA, and DevOps teams
• Code Quality & Leadership
  • Conduct code reviews, mentoring, and enforce best practices
  • Drive technical design discussions and solution architecture
  • Participate in Agile/Scrum processes
• Performance & Operations
  • Optimize systems for low latency, high availability, and reliability
  • Troubleshoot production issues and perform root-cause analysis

Required Qualifications

• Experience
  • 8-12+ years of experience in backend development
  • Strong experience in financial services / banking / fintech domain (mandatory)
  • Proven experience building enterprise-grade applications and APIs
• Technical Skills
  • Strong proficiency in C#, .NET Core / .NET 8+ / ASP.NET Core
  • Hands-on experience with REST APIs, Web APIs, and microservices
  • Solid knowledge of SQL Server and database design
  • Experience with Entity Framework / ORM tools
  • Understanding of distributed systems, event-driven architecture
• Architecture & Cloud
  • Experience with cloud platforms (Azure/AWS/GCP)
  • Familiarity with Docker, Kubernetes, CI/CD pipelines
  • Knowledge of system design and scalability patterns
• Security & Compliance
  • Strong understanding of: API security (OAuth2, JWT, OIDC)
  • Data encryption and protection
  • Financial compliance standards (PCI, SOX, etc.)
• Other Skills
  • Strong analytical, problem-solving, and debugging skills
  • Excellent communication and stakeholder management
  • Experience mentoring and leading engineers

Preferred Qualifications

• Experience with low-latency trading or real-time systems [builtin.com]
• Knowledge of payment systems (ACH, RTP, cards, SWIFT, etc.)
• Experience with event streaming (Kafka, RabbitMQ)
• Exposure to Domain-Driven Design (DDD)

Education

• Bachelor's or Master's degree in Computer Science, Engineering, or related field

What Success Looks Like

• Delivering secure, scalable APIs powering financial transactions
• Maintaining high system uptime and performance under load
• Driving architecture modernization and microservices adoption
• Enabling compliant and reliable financial integrations

Nice-to-Have (Based on Your Context - Optional Add-on)

• Experience with identity platforms, payments systems, or core banking integrations
• Familiarity with event-driven enterprise platforms (Redis, RabbitMQ)
• Exposure to API gateways (Apigee).

About Axos

Born digi