Flex

Sr Manager, Software Engineering

Flex$195K — $268K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in computer science, Software Engineering, or related field.
  • 8+ years of software engineering experience.
  • Proven experience modernizing legacy applications and reducing technical debt.
  • Strong knowledge of object-oriented design, software architecture patterns, API development, and integration technologies.
  • Deep experience in one or more programming languages: C#, Java, Python, JavaScript/TypeScript.
  • Experience with cloud platforms, preferably Azure, as well as AWS and Google Cloud.

Responsibilities

  • Analyze existing custom applications and legacy codebases.
  • Create application inventories and dependency maps.
  • Identify opportunities to consolidate applications and reduce technical debt.
  • Develop modernization roadmaps and migration strategies.
  • Leverage AI-assisted development platforms to enhance coding processes.
  • Refactor legacy applications into modern architectures.
  • Establish engineering best practices including CI/CD and DevSecOps.

Benefits

  • Full range of medical, dental, and vision plans
  • Life Insurance
  • Short-term and Long-term Disability
  • Matching 401(k) Contributions
  • Vacation and Paid Sick Time
  • Tuition Reimbursement
Full Job Description
Job Summary

We are seeking a highly capable and hands-on Senior Software Engineer to lead the modernization and simplification of our custom application landscape. This role will be responsible for analyzing legacy applications, identifying opportunities for consolidation and rationalization, and rebuilding critical business applications using modern cloud-native architectures, development frameworks, and AI-powered software engineering tools.

The ideal candidate combines deep software engineering expertise with proficiency in emerging AI-assisted development platforms such as OpenAI Codex, Gemini Code Assist, GitHub Copilot, Microsoft Copilot, Claude Code, Cursor, and similar tools to dramatically accelerate code analysis, documentation, refactoring, testing, and application redevelopment.

This is a transformational role focused on reducing technical debt, improving maintainability, increasing development velocity, and simplifying the enterprise application portfolio.

Key responsibilities:

Application Assessment & Rationalization
  • Analyze existing custom applications, integrations, and legacy codebases.
  • Create application inventories and dependency maps.
  • Identify opportunities to consolidate redundant applications, eliminate debt, reduce maintenance costs, and improve scalability
  • Develop modernization roadmaps and migration strategies


AI-Assisted Software Engineering
  • Leverage AI-assisted development platforms such as: Codex, Gemini Code Assist, GitHub Copilot, Microsoft Copilot, Claude Code, Cursor
  • Use AI tools to Reverse-engineer legacy applications, generate technical documentation, accelerate code refactoring, create test cases and automation. Improve code quality, increase developer productivity.


Application Modernization:
  • Refactor monolithic legacy applications into modern architectures.
  • Design and build cloud-native applications, API first services, event-driven architectures, microservices where appropriate, and modernize user experiences using contemporary web and mobile frameworks.
  • Implement reusable development patterns and engineering standards


Architecture & Engineering Excellence
  • Establish engineering best practices including: DevSecOps, CI/CD pipelines, automated testing, code quality controls, security by design.
  • Ensure solutions meet enterprise architecture standards
  • Collaborate with cybersecurity, infrastructure, and business teams


Documentation & Knowledge Management
  • Create architecture diagrams and technical documentation.
  • Document legacy-to-target-state transformation plans.
  • Build reusable engineering assets, accelerators, and coding standards.


What we're looking to add to our team:
  • Bachelor's degree in computer science, Software Engineering, or related field.
  • 8+ years of software engineering experience.
  • Proven experience modernizing legacy applications and reducing technical debt.
  • Strong knowledge of object-oriented design, software architecture patterns, API development, integration technologies and enterprise application development.
  • Deep experience in one or more languages: C#, Java, Python, JavaScript/TypeScript.
  • Experience working with Cloud platforms such as Azure (preferred), AWS, Google Cloud

SS26
CA47
EA42

What you'll receive for the great work you provide:
  • Full range of medical, dental, and vision plans
  • Life Insurance
  • Short-term and Long-term Disability
  • Matching 401(k) Contributions
  • Vacation and Paid Sick Time
  • Tuition Reimbursement


Application Deadline:

Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.
Job Posting Start Date 07-22-2026 Job Posting End Date 08-24-2026
The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity.
$195,200.00 USD - $268,400.00 USD Annual

Job Category
Design, Process & Technology Engineering

Is Sponsorship Available?
No

About Flex

Flex Ltd. is an American Singaporean-domiciled multinational electronics contract manufacturer. It is the third largest global electronics manufacturing services (EMS), original design manufacturer (ODM) company by revenue, behind only Pegatron for what concerns original equipment manufacturers. Flex has manufacturing operations in over 30 countries, totaling approximately 200,000 employees.
Learn more about Flex
Size
172,648 employees
Market Cap
$9.7 billion
Industry
Net Income
$421 million
Founded
2016
5 Year Trend
+1.8%
Revenue
$23.3 billion
NASDAQ

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