ABOUT THE ROLE

As a Senior Software Engineer on the API & Integration team, you’ll design and build greenfield API services that sit at the center of our modernization strategy. Your work will define the integration layer and transitional architecture that ties together the existing credit union platform and the next generation of services — normalizing data against the established schema so that disparate systems can speak a common language. You’ll work hands-on in Go, designing clean REST or GraphQL interfaces, and partner closely with engineers, product managers, and QA to deliver reliable, secure, and welldocumented integrations.

This is an exceptional opportunity for an engineer who loves designing APIs from first principles, thinks in systems and data models, and wants to help shape the foundation of a platform serving credit unions across the country.

WHO WILL LOVE THIS JOB

- Someone who finds more satisfaction in making something better than building something new — and understands why that’s harder
- Someone who believes that technology serving people’s financial lives is worth doing with real care and precision
- Someone who is energized by a company in motion — where the roadmap is growing and your contributions shape the direction
- Someone who is energized by greenfield API design and wants to shape an integration layer from the ground up
- Someone who thinks in data models and enjoys the puzzle of normalizing messy, real-world schemas into clean, durable interfaces
- Someone who thrives as the connective tissue between systems — building the hub that ties several platforms together
- Someone who values pragmatism, building transitional architecture that delivers value today while building for the future
- Someone who enjoys mentoring, raising the bar on API standards, and sharing what they know





ESSENTIAL DUTIES AND RESPONSIBILITIES

API Design & Architecture

- 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 our 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

Integration & Data Normalization
- Design the data-normalization layer that maps between current 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

Collaboration & Mentorship
- 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

QUALIFIED CANDIDATES SHOULD HAVE

Required

- 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

Preferred

- 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

📌 API Software Engineer (India)
🏢 TechGrit
📍 India