Sharetec SystemsRemote
Senior Software Engineer, API & Integration
United States of America
Full Time
8 hours ago
$110,000 - $140,000 USD
No H1B
Key skills
GoREST APIsGraphQLDockerOAuth2JWTOpenAPISwaggerTerraformDatabase DesignData NormalizationPostgreSQLSQL ServerAPI SecurityAPI VersioningPerformance OptimizationInfrastructure as CodeService BusMessaging IntegrationsAzure Service BusMuleSoftKafkaMQKubernetesCI/CD PipelinesSOC 2PCI-DSSSQLRailsAzurePostmanCI/CDLeadershipMentoringCommunication
About this role
Sharetec Systems is seeking a Senior Software Engineer, API & Integration to join their team. The role involves designing and building API services that are central to Sharetec's modernization strategy, ensuring integration and data normalization across systems, while mentoring junior engineers and collaborating with product managers.
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 Sharetec's Core modernization initiative
- Design and build complex scalable workloads 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
Requirements:
- 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 workloads
- 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 Postman (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, MuleSoft, Kafka, MQ)
- Experience with containers and orchestration (Docker, Kubernetes) and CI/CD pipelines
- Familiarity with SOC 2, PCI-DSS, or other compliance frameworks