| Job title: Golang Developer Location: Denver/Englewood , CO OR West Chester, PA Senior Integration & Composition Engineer to design and implement dynamic payload transformations and configuration compositions to integrate multiple systems reliably and efficiently. This role focuses on payload composition, transformation, and system integration across internal systems and external partners. The engineer will use JQ and Go templates to implement dynamic request/response mappings, configuration-driven workflows, and environment-specific integrations while ensuring scalability, resiliency, and compliance. Key Responsibilities - Design and implement integration compositions across APIs, services, and platforms
- Transform, filter, and enrich JSON payloads using JQ
- Build reusable and parameterized templates using Go templating
- Compose requests/responses for downstream systems based on business rules
- Support system-to-system integration, orchestration, and data mapping
- Troubleshoot integration issues related to payload structure and transformations
- Collaborate with platform, API, and DevOps teams to ensure seamless deployments
- Maintain versioned, reusable templates and transformation logic
- Build Go template driven configurations to support reusable, parameterized integrations across environments (DEV, QA, UAT, PROD)
- Integrate 3rd party platforms with upstream channels and downstream providers
- Implement standardized error handling and decline mapping to ensure consistent customer and operational experiences
- Partner with product, architecture, QA, and operations teams to ensure payment integrations meet business, regulatory, and performance requirements
- Troubleshoot production issues related to payment composition logic, payload mismatches, or partner integration failures
- Contribute to documentation, best practices, and reusable integration assets
Required Skills & Experience - Hands-on expertise with JQ for JSON filtering, mapping, aggregation, conditionals
- Strong proficiency with Go templating, including conditionals, loops, and reusable templates (Helm-style experience is a plus) & payload generation
- Integration & APIs - Experience integrating REST-based payment APIs and event-driven flows. REST APIs, JSON, HTTP, API gateways, middleware, or integration platforms
- Experience in programming and scripting languages such as GO/Java/Python
- Understanding of payment failure scenarios, declines, and reconciliation impacts
- Experience supporting high-throughput, low-latency transaction systems
- Knowledge in DevOps such as Kubernetes, Helm, CI/CD Pipeline
- Familiarity with orchestration frameworks
- Strong debugging and problem-solving skills
Preferred / Nice-to-Have - Prior experience with payment platforms and end-to-end payment lifecycles
- Knowledge of alternative payment methods, recurring billing, and subscription models
- Exposure to cloud-native deployments, CI/CD pipelines, and Kubernetes-based platforms
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