Senior Software Engineer, API & Integration

About the role

Sharetec is looking for a Senior Software Engineer, API & Integration to join our team! At Sharetec, we believe in a people-first business. Our mission is to make millions of people's lives easier by developing innovative core banking and lending software solutions for credit unions and their members. Our customers rely on us for powerful financial technology that enhances operations across accounting, lending, member services, and online banking, and they count on us to be a caring, trusted partner in their success.

Responsibilities

• Design and build greenfield API services 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 and build 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.
• Solid understanding of API security, versioning, performance optimization, and observability.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.

Qualifications

• Strong database design and data-architecture skills, including data normalization and transitional/strangler-pattern architectures (PostgreSQL, SQL Server, or similar).
• 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.

Benefits

Sharetec offers a robust benefits package, including competitive salaries, medical, dental, vision, life and disability coverage, Paid Time Off (PTO), paid holidays - including your birthday off!, $1,000 employee referral program, 401(k) and 401(k) matching. We like to put the fun in the funds with department and company outings like virtual escape rooms, trivia, and other company-wide events.

Pay

The starting salary for this position is $110,000 - $140,000 based on experience, plus annual bonus opportunity.

Schedule

This is a full-time, exempt, remote position open to candidates residing in any U.S. state, with the exception of California.