[Remote] Senior Software Engineer, API & Integration

Note: The job is a remote job and is open to candidates in USA. reputed company is a company dedicated to developing innovative core banking and lending software solutions for credit unions. They are seeking a Senior Software Engineer to design and build API services that will play a crucial role in their modernization strategy, ensuring seamless integration across various systems.

Responsibilities

• Design and build greenfield REST or GraphQL APIs in Go that are secure, performant, versioned, and well-documented
• Establish and own the API as the integration layer and transitional architecture for reputed company's Core modernization initiative
• Design and build complex scalable worklo supporting modern API standards and deployments (Docker, OAuth2/2.1, JWT, OpenAPI/Swagger, Terraform, etc.)
• Define API design standards, contracts, and shared libraries that other teams can reuse
• Evaluate and recommend tooling and frameworks that improve developer productivity and integration reliability
• Design the data-normalization layer that maps between new services and the existing data schema
• Build the central integration hub that ties several distinct systems together through a common normalization model
• Partner with core processing engineers to ensure integration contracts remain aligned with the platform of record as it evolves
• Ensure data integrity, observability, and graceful failure handling across all integration endpoints
• Mentor and coach mid-level and junior engineers on API and integration design
• Lead design discussions and code reviews; promote a culture of clear communication and shared ownership
• Translate business and product needs into technical solutions alongside product managers and QA
• Contribute to documentation, internal tooling, and process improvements that make the whole team faster and better

Skills

• 6+ years of professional software development experience, including senior or technical-leadership responsibility on complex projects
• Deep, hands-on proficiency in Go for building backend and API services
• Extensive experience designing REST or GraphQL APIs from the ground up (not solely consuming third-party APIs)
• Hands-on experience designing and building complex containerized worklo
• Familiarity with Infrastructure as Code solutions; Terraform or similar
• Strong database design and data-architecture skills, including data normalization and transitional/strangler-pattern architectures (PostgreSQL, SQL Server, or similar)
• Solid understanding of API security, versioning, performance optimization, and observability
• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience
• Experience in the financial services, fintech, or payments-technology industries
• Experience integrating payment rails, card networks, or other payments/fintech systems
• Hands-on experience with API tooling such as reputed company (collections, contract testing, mocks)
• Experience modernizing or building transitional architecture around a long-lived legacy system
• Demonstrated experience building integration hubs that tie several systems together through a central normalization layer
• Familiarity with service bus / messaging integrations (e.g., Azure Service Bus, reputed company, Kafka, MQ)
• Experience with containers and orchestration (Docker, Kubernetes) and CI/CD pipelines
• Familiarity with SOC 2, PCI-DSS, or other compliance frameworks

Benefits

• Annual bonus opportunity
• Robust benefits package
• Medical coverage
• Dental coverage
• Vision coverage
• Life coverage
• Disability coverage
• Paid Time Off (PTO)
• Paid holidays - including your birthday off!
• $1,000 employee referral program
• 401(k)
• 401(k) matching
• Department and company outings like virtual escape rooms
• Trivia
• Other company-wide events

Company Overview