Lead Golang Developer

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Position: Go lang Developer Lead

Location: Englewood, CO OR West Chester, PA

Mode Of Hire: Contract

Mode Of Work: Onsite

Job Description

Mandatory Skills

JQ, Go Template, REST API, JSON

Preferred Skills (Preferred Experience)

Python, GO Language, Java, CI/CD

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