Posted Sep 11, 2026

Senior Software Engineer - API & Integration Lead

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SUMMARY

Greentech Renewables is a leading national distributor of solar, energy storage, and renewable energy products. We partner with contractors, developers, and businesses across the United States to deliver the equipment, expertise, and support needed to power the clean energy transition. Our mission is to help customers succeed while creating opportunities for our employees to grow, innovate, and make a meaningful impact in the rapidly expanding renewable energy industry.

We are seeking a Senior Software Engineer - API & Integration Lead to serve as the engineering lead for Ensemble 2.0, a business-critical integration platform that connects external partners with Greentech and CED systems. Working closely with the Principal Software Engineer / Architect and Product Owner, this role will translate architecture into production-ready C#/.NET services, establish reusable API, SQL Server, and integration patterns, and guide the phased migration of legacy workflows. The ideal candidate combines deep hands-on engineering skill with the judgment and communication needed to mentor teammates and build services that are reliable, observable, auditable, and supportable.

REPORTS TO: Ensemble Product Owner

MINIMUM QUALIFICATIONS

PREFERRED QUALIFICATIONS

  • Experience with Azure DevOps, CI/CD pipelines, App Services, Azure Functions, Service Bus, Key Vault, Application Insights, or comparable platform tooling.
  • Experience with SQL Service Broker, SQL-backed queues, background workers, or other asynchronous processing patterns.
  • Experience analyzing, documenting, and migrating legacy business applications. Experience modernizing Node.js, JavaScript, TypeScript, or similar systems into .NET-based architectures is highly desirable.
  • Experience with file-based integrations such as CSV, remittance, EDI, or scheduled data ingestion.
  • Experience working with business-critical integrations, financial transactions, operational workflows, or large-scale data migrations. Prior experience in distribution, finance, renewable energy, ERP, or logistics environments is helpful but not required.
  • Experience with API contract testing, automated regression testing, performance testing, and production-readiness gates.
  • Previous technical-lead or mentoring experience, particularly on a small product engineering team.

WORKING CONDITIONS

Remote 

COMPENSATION:

The compensation range for this position is $150,000.00 to $170,000.00 annually

OTHER COMPENSATION:

The following additional compensation may be applicable for this position:

BENEFITS:

Additional Benefits for Full-Time Only:

SUPERVISORY RESPONSIBILITIES: No

ESSENTIAL JOB FUNCTIONS

  • Partner with the Principal Software Engineer / Architect to implement system boundaries, migration strategy, technical standards, and production-readiness requirements.
  • Establish and demonstrate reusable patterns for C#, ASP.NET Core, SQL Server, background processing, and partner integrations.
  • Design and build secure, versioned APIs and SQL-backed workflows that exchange business-critical data with internal and external systems.
  • Define and implement payload validation, authentication, authorization, error handling, retry and replay behavior, duplicate prevention, audit trails, and correlation across services.
  • Analyze, document, and migrate legacy business logic into centralized, testable, and maintainable services while ensuring behavioral parity with existing production workflows.
  • Lead technical implementation for complex workflows involving projects, milestones, invoices, credits, remittance activity, and related operational data.
  • Review code and technical designs; mentor engineers through documentation, implementation examples, pairing, and actionable feedback.
  • Collaborate with Product, QA, and Support to refine acceptance criteria, identify edge cases, improve testability, and determine release readiness.
  • Troubleshoot production and pre-production issues using logs, traces, payloads, database records, and monitoring data; drive durable corrective action.
  • Create and maintain technical documentation for integration contracts, implementation patterns, operational behavior, and support procedures.

NOTE: This job description is not designed to cover or contain a comprehensive listing of all required activities, duties or responsibilities. Other duties, responsibilities, and activities may be assigned at any time; with or without notice.

We are an Equal Opportunity Employer - Disability | Veteran

Bachelor's degree or equivalent experience and 7+ years of software development experience. Requires C#, ASP.NET Core, SQL Server, REST APIs, JSON, OpenAPI/Swagger, integrations, distributed systems, and strong communication skills.

Key Responsibilities

Skills & Tools

C#, ASP.NET Core, SQL Server, REST APIs, JSON, OpenAPI, Swagger, Azure DevOps, CI/CD, App Services, Azure Functions, Service Bus, Key Vault, Application Insights, Node.js, JavaScript, TypeScript, CSV, EDI

Job Details

Benefits

About Consolidated Electrical Distributors

A national distributor of solar, energy storage, and renewable energy products serving contractors, developers, and businesses. — Industry: Retail and Wholesale