Senior Enterprise AI & Legacy Modernization Engineer

goodsservices; United States; Remote; USD 130,000 - 180,000; Full time

Job summary

goodsservices is seeking a senior engineering role to modernize enterprise applications while keeping essential business operations reliable. You will blend application development and support with phased legacy migration and production-ready AI solutions, spanning from understanding existing systems to design, deployment, and ongoing support.

You will assess legacy apps, plan phased modernization, and develop APIs, services and reusable components.

Qualifications

• Experience in enterprise software development with JavaScript, TypeScript, Go and Python.
• Knowledge of modern architecture, OO development, legacy modernization, API design, REST, SQL and relational databases.
• Experience with source control, CI/CD, deployment, testing, release management, secure development and production troubleshooting.
• Experience integrating third-party systems and collaborating with data, infrastructure, security, product, and support teams.
• Practical AI experience with LLM APIs, agents, prompt design, tool calling, retrieval-augmented generation, or workflow automation.

Responsibilities

• Assess legacy applications, their business behavior, architecture, data, integrations, security dependencies, reports, and production relationships.
• Plan controlled modernization phases preserving functionality while reducing debt and disruption.
• Develop and maintain enterprise apps, APIs, services, integrations, and reusable components; investigate defects to root cause.
• Build AI-enabled tools, agents, and workflows using LLM platforms and approved data.
• Evaluate AI output quality and implement validation, logging, monitoring and access controls.
• Support testing and releases across development, test, UAT, and production environments; document systems and deployments, define recovery approaches and communicate status.

Skills

JavaScript

TypeScript

Go

Python

API design

REST services

SQL

Relational databases

Source control

Tools

Jenkins

Job description

goodsservices is seeking a senior engineering role to modernize enterprise applications while keeping essential business operations reliable. You will blend application development and support with phased legacy migration and production-ready AI solutions, spanning from understanding existing systems to design, deployment, and ongoing support.

You will assess legacy apps, plan phased modernization, and develop APIs, services and reusable components.