Senior Integration & Composition Engineer (JQ, JSON and Golang)

Saransh Inc; Englewood (CO); Hybrid; USD 100,000 - 130,000; Full time

Job summary

A leading technology firm is seeking a Senior Integration & Composition Engineer to design and implement integration solutions focusing on dynamic payload transformations. The ideal candidate will have over 7 years of experience, particularly with JQ and Go templating for API integrations. This role is hybrid, working both onsite and remotely in Englewood, CO or West Chester, PA, and offers an exciting opportunity to work with payment APIs and high-throughput systems.

Qualifications

• 7 years of experience in system integration and composition engineering.
• Hands-on expertise with JQ for JSON filtering and transformation.
• Strong proficiency with Go templating and API integrations.

Responsibilities

• Design and implement integration compositions across APIs and services.
• Transform and enrich JSON payloads using JQ.
• Collaborate with platform, API, and DevOps teams for deployments.

Skills

JQ

Go

Python

AWS

REST API

Payments

Tools

Go templating

Kubernetes

CI/CD

Job description

Role: Senior Integration & Composition Engineer

Location: Denver/Englewood, CO (or) West Chester, PA (Hybrid - 3 days a week onsite)

Job Type

Contract

Mandatory Areas

Must have Skills

• 7 years of experience
• JQ, GO
• 7 years of experience – OOPS, Python
• 5 years of experience – Scripting, AWS, REST API, Payments

Mandatory Skills

JQ, Go Template, REST API, JSON

Preferred Skills

Python, GO Language, Java, CI/CD

Job Description

• 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.

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.

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.