Senior Software Engineer, API & Integration

Sharetec Systems

Senior Software Engineer designing and building greenfield API services at Sharetec. Leading API design and integration for credit unions in the U.S.

Posted 7/21/2026full-timeRemote • California • 🇺🇸 United StatesSenior💰 $110,000 - $140,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and building secure, performant REST and GraphQL APIs using Go, with a strong focus on data normalization and integration architecture. Proven ability to mentor engineers and lead design discussions while ensuring alignment with business needs and technical standards.

Highest-signal resume keywords

Go ProgrammingREST API DesignGraphQL API DesignData NormalizationInfrastructure as Code

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

API SecurityPerformance OptimizationDatabase DesignContainerizationVersioningObservabilityTransitional ArchitectureComplex Workload DesignIntegration DesignTechnical Leadership

Soft Skills

MentoringClear CommunicationCollaborationProblem SolvingCoaching

Tools & Technologies

DockerTerraformPostgreSQLSQL ServerOpenAPISwaggerOAuth2JWT

Certifications & Qualifications

Bachelor's Degree in Computer ScienceBachelor's Degree in Software Engineering

Industry Keywords

API StandardsIntegration LayerCore ModernizationData ArchitectureIntegration Reliability

Tech Stack

Tools & technologies

DockerGoGraphQLPostgresSQLTerraform

About the role

Key responsibilities & impact

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

What you’ll need

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.

Benefits

Comp & perks

Health insurance
Dental coverage
Vision coverage
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