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Senior Backend Engineer (.NET)@Remote

Diverse Lynx

Role overview

Qualifications

  • 5+ years of professional experience in backend software engineering with statically typed languages (Java, C#, Go, or TypeScript/Node.js)
  • Demonstrated mastery in designing, versioning, and documenting production REST APIs
  • Strong experience in relational data modeling (PostgreSQL, MySQL, or SQL Server)
  • Hands-on experience with message brokers/event buses (e.g., Kafka, RabbitMQ, AWS SQS/SNS)

Responsibilities

  • Design, build, and maintain production-grade, secure RESTful APIs and microservices managing provider hierarchies, billing accounts, and payment lifecycle events
  • Implement reliable, idempotent event consumers and webhook ingestion pipelines to process asynchronous notifications
  • Design normalized relational schemas and data transformation pipelines to seamlessly migrate complex hierarchical records across platforms
  • Engineer reliable interfaces with external and internal partners including CRM case management, tax identification verification, and banking validation services

Key facts

Hard skills

About the company

Diverse Lynx logo

Diverse Lynx

IT Services & IT Consulting

We are a WBENC and NMSDC certified company helping our clients in their Diversity spending on Staffing or Contingent Workforce Services. Established in 2002 and headquartered out of Princeton-NJ, our 2000+ associates’ strength globally helps clients with talent across Technology, Healthcare, Life Sciences, Aerospace, Automotive, Energy, Pharmaceuticals, Retail, Telecom, Manufacturing and Engineering domains. Our presence in USA, Canada & India helps us support clients in IT, Non-IT, Healthcare, Hospital and Clinical hiring, across the globe.

Company details

Company typeLarge
IndustryIT Services & IT Consulting
Company size1001 - 5000

Links

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Job description

Senior Backend Engineer (.NET)@Remote
Location : Remote
Position Overview Key Responsibilities
  • API & Service Architecture: Design, build, and maintain production-grade, secure RESTful APIs and microservices managing provider hierarchies, billing accounts, and payment lifecycle events.
  • Event-Driven & Webhook Systems: Implement reliable, idempotent event consumers and webhook ingestion pipelines to process asynchronous notifications (e.g., ACH NOC events, banking state changes) with zero data loss.
  • Data Migration & Modeling: Design normalized relational schemas and data transformation pipelines (DTOs, ETL backfills) to seamlessly migrate complex hierarchical records across platforms.
  • Enterprise Integrations: Engineer reliable interfaces with external and internal partners—including CRM case management (Salesforce), tax identification verification (SOVOS), and banking validation services (Wells Fargo).
  • State Machine & Workflow Automation: Develop scalable workflow engines and business rule decision trees governing automated verification gates ( Auto-Approved , Auto-Declined , Pending Review ) and CSR portal operations.
  • Operational Excellence: Write comprehensive unit, integration, and contract tests, contribute to architecture reviews, and maintain clear API specifications.
Required Qualifications
  • 5+ years of professional experience in backend software engineering with statically typed languages (Java, C#, Go, or TypeScript/Node.js).
  • RESTful API Engineering: Demonstrated mastery in designing, versioning, and documenting production REST APIs (handling deep pagination, complex DTO mappings, and high-throughput payloads).
  • Relational Databases & SQL: Strong experience in relational data modeling (PostgreSQL, MySQL, or SQL Server), complex joins, foreign-key relationships, index Eligible to workimization, and data migration scripting.
  • Distributed Systems & Event Architecture: Hands-on experience with message brokers/event buses (e.g., Kafka, RabbitMQ, AWS SQS/SNS) and designing idempotent consumers for webhook and asynchronous event handling.
  • Enterprise Integration Patterns: Proven background integrating with third-party webhooks, REST/SOAP APIs, and handling retry strategies, circuit breakers, and distributed error handling.
Preferred Qualifications
  • Prior experience in FinTech, Payment Processing, or Healthcare Payer/Provider Systems (familiarity with ACH, NACHA rules, NOC codes, TIN/NPI validation, or 835 EDI transactions).
  • Experience integrating with Salesforce APIs (e.g., automated Case and Contact management).
  • Familiarity with secure credential handling, financial compliance, and PII/PHI data privacy standards.










Disclaimer: Diverse Lynx LLC is an Equal Opportunity Employer. All applicants and employees are evaluated without discrimination, based solely on their qualifications, ability, competence and performance. This email and its attachments may contain confidential or proprietary information and is intended only for the recipient(s). If you received this message in error, please disregard it and notify the sender. If you no longer wish to receive our communications, you may unsubscribe at any time.
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