Senior Software Architect; C# and .NET - Financial Transactions Specialization

** This is an opportunity to join our team of top-notch software engineers working closely together on interesting projects for our clients. This position is fully remote (indefinitely). **

Emergent Software is seeking a Senior Software Architect with deep expertise in designing and implementing high-performance, secure, and scalable financial transaction systems. This role requires the ability to architect and build a credit card processing platform from the ground up
, emphasizing processing speed, security, up-time, scalability, and data integrity
. A qualified candidate will have advanced knowledge of C#, .NET, Azure infrastructure
, and payment processing standards
, along with experience in architecting distributed systems that meet stringent compliance and reliability requirements.

• Work closely with other talented engineers and team members. Our vetting process means you can count on your team members to know what they are talking about.
• Work from home or work remotely from anywhere you want.
• Flexible work schedule meaning you can work regular hours or whenever you work best.
• Work-life balance is essential and highly valued at Emergent Software. If you choose to work more than 40 hours, you’ll be compensated for the extra work!
• Work on interesting projects solving complex business problems with custom software.
• 100 hours per year to focus on your professional development. We invest in your growth!
• Profit sharing bonus means as we’re successful, you’re successful.
• Excellent benefits package including medical insurance, dental, vision, 401(k) matching, FSA, disability, life insurance, and paid parental leave.

• C# and .NET (latest versions)
• Blazor or React (JS or Type Script)
• Azure SQL
• Azure PaaS (App Services, Blob Storage, Service Bus, Key Vault, etc.)
• Azure Dev Ops for CI/CD
• Payment Gateway APIs and PCI-compliant frameworks

• Architect and design a credit card processing system with a focus on:
• High throughput and low latency transaction processing
• Security and compliance (PCI DSS, encryption, tokenization)
• Fault tolerance and high availability
• Horizontal scalability and load balancing
• Data integrity and accuracy
• Lead technical requirements gathering, infrastructure design, and technology selection for financial transaction systems.
• Collaborate with clients to define secure payment workflows and integration strategies.
• Provide technical leadership and mentorship across multiple projects.
• Establish and enforce best practices for secure coding and transaction handling.
• Work on multiple projects simultaneously and prioritize effectively.
• Participate in all aspects of the agile software development life cycle.

• Exceptional technical communication skills for explaining complex financial system architectures to technical and non-technical audiences.
• Deep knowledge of distributed system architecture and security best practices for financial applications.
• Advanced experience with:
  • .NET back end
  • Azure cloud-native services (App Services, Functions, Storage, Key Vault)
  • Data Access (Entity Framework, T‑SQL)
  • Azure SQL
  • Identity and Access Management (Okta, Auth0, Azure B2C)
• Strong understanding of:
  • Payment processing standards (PCI DSS)
  • Encryption and tokenization techniques
  • Fraud detection and prevention strategies
• Ability to design for 99.99% uptime, disaster recovery, and transaction reconciliation.
• Experience with CI/CD pipelines, Dev Ops, and secure deployment practices.
• Knowledge of ISO 8583, EMV, or similar transaction protocols.
• Payment Certification processes.

• Experience with payment gateways (e.g., Stripe, Adyen, ).
• Familiarity with real-time monitoring and alerting systems.
• Previous consulting experience in financial services or fintech.
• Experience with machine learning for fraud detection.

At Emergent Software, we work hard to find the best software engineers capable of developing high quality software for our clients. If you think you’re one of those, please understand that the effort put into this by people like yourself helps us be successful in surrounding you with other top-notch engineers. Here are the…