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Re:Build Manufacturing · 1 day ago

Principal Software Engineer - C# / .NET

Los Angeles, CA

Full-time

Hybrid

Lead/Staff

$130K/yr - $260K/yr

10+ years exp

Re:Build Manufacturing is a growing family of industrial and engineering businesses seeking a Principal Software Engineer to set technical vision and drive the development of scalable software systems. This role combines hands-on technical leadership with a focus on engineering excellence and collaboration across teams.

IndustrialIndustrial AutomationIndustrial ManufacturingMachinery ManufacturingManufacturing

Responsibilities

Lead the design and architecture of complex, scalable, cloud-native systems

Make strategic decisions regarding tech stack, system design, performance, and reliability

Set and evolve the organization’s technical strategy, including evaluating emerging technologies and driving innovation

Establish and uphold engineering standard processes for code quality, security, performance, and scalability

Conduct and mentor others through rigorous code reviews, design sessions, and technical deep-dives

Author high-quality technical documentation, design specs, and architecture diagrams

Develop and maintain high-quality, efficient, well-tested code for critically important components

Work across multiple languages and frameworks depending on project needs (primarily C#, React/JavaScript)

Build and deploy modern applications using serverless and containerized AWS services, including Lambda, ECS/Fargate, DynamoDB, S3, API Gateway, and Step Functions

Design and deliver robust APIs (REST and GraphQL)

Lead or contribute to efforts that incorporate AI/ML, generative AI, intelligent automation, and AI-assisted workflows

Work closely with product, operations, design, and manufacturing teams to deliver impactful solutions

Qualification

C#Cloud-native systemsAWSMicroservicesReactREST APIsGraphQLAI/ML integrationTechnical leadershipCommunicationProblem solvingMentoring

Required

10+ years of software development experience, with deep expertise in cloud-based application development

Demonstrated experience designing high-performance, scalable architectures

Strong backend engineering expertise with C#, microservices, and distributed systems

Proficiency in modern JavaScript frameworks (preferably React)

Extensive AWS experience including serverless architectures, containers, CI/CD pipelines, and modern cloud services

Experience with REST and GraphQL APIs

Solid foundation in algorithms, data structures, and core CS fundamentals

Awareness of security best practices: authentication, authorization, encryption, and compliance for cloud-native systems

Experience mentoring engineers and shaping engineering culture

Willingness to travel periodically

Fluency in written and spoken English

Experience or passion for integrating generative AI, LLMs, automation, or ML-driven solutions into production systems

Ability to lead the adoption of AI-enhanced workflows and developer productivity tools

Inspires, motivates, and mentors engineering teams through trust, clarity, and technical excellence

Strong critical-thinking and decision-making skills, especially in ambiguous or complex environments

Creative problem solver who brings new ideas and solutions to challenging technical problems

Excellent time-management skills, with the ability to prioritize and implement in a fast-paced environment

High degree of professionalism, integrity, and ethical conduct

Exceptional communication—clear, concise, and collaborative

Highly organized, detail oriented, and committed to quality

A team-first mindset, with the ability to work effectively across functions and at all levels of the organization

Preferred

Experience or passion for integrating generative AI, LLMs, automation, or ML-driven solutions into production systems

Ability to lead the adoption of AI-enhanced workflows and developer productivity tools

Benefits

Performance-based annual bonus, available to all employees

Re:Build incentive stock awards issued annually

Comprehensive benefits package

Company

Re:Build Manufacturing

Re:Build Manufacturing is a family of industrial businesses combining cutting-edge enabling technologies, operational superiority and strategic M&A to build America’s next generation industrial company.

Founded in 2020

Framingham, Massachusetts, USA

1001-5000 employees