Senior Engineer, AI Code Modernization

1000 Bentley Systems, Incorporated; Exton (PA); Hybrid; USD 130,000 - 195,000; Full time

Benefits offered by this job

Salary and benefits package

Bentley Impact Day

Colleague recognition programs

Job summary

Bentley Systems is building an AI Code Modernization team to transform large-scale engineering software into modern cloud-native architectures. You will design AI-driven pipelines, improve agentic workflows, and modernize complex codebases across Bentley’s products.

The role emphasizes production impact, reliability, and scalability, with no travel required. Hybrid work is available in Exton, PA and Philadelphia area.

Qualifications

• Strong software development background with ownership of production systems.
• Experience applying AI, machine learning, or automation to real-world problems.
• Experience designing pipelines and developer tooling for large-scale systems.

Responsibilities

• Design and build AI-driven transformation pipelines for large-scale legacy codebases.
• Develop agentic AI workflows for code understanding, refactoring, and modernization.
• Modernize desktop, simulation, and engineering apps into cloud-native services.
• Create automated tooling and testing strategies to ensure correctness of transformed code.
• Collaborate with architects and product leaders to identify modernization opportunities.

Skills

Software development

AI systems

Pipelines

Rust

C++

C

Tools

CI/CD pipelines

Testing frameworks

DevOps

Job description

Location: Hybrid - Exton, PA/Philadelphia

Bentley is building a specialized AI Code Modernization team focused on applying advanced AI techniques to transform large-scale engineering software systems. This team is responsible for developing AI-powered modernization pipelines that help migrate and evolve complex legacy applications, including scientific and engineering codebases, into modern cloud-native architectures. This is a highly applied engineering role. You will work at the intersection of software engineering, AI systems, developer tooling, and modernization automation. Success is measured through production impact, scalability, reliability, and the ability to accelerate modernization across Bentley's portfolio of products.

What You'll Do

• Design and build AI-driven software transformation pipelines for large-scale legacy codebases.
• Develop and improve agentic AI workflows that support code understanding, refactoring, validation, and modernization.
• Modernize existing desktops, simulation, and engineering applications into cloud-native services and modern architectures.
• Use loop engineering approach to improve quality, reduce costs and accelerate the conversion/test/correction process.
• Evaluate and improve AI systems for accuracy, reliability, performance, observability, and cost efficiency.
• Create automated tooling, validation frameworks, and testing strategies to ensure correctness of transformed code.
• Partner with architects, product leaders, and engineering teams to identify modernization opportunities and drive adoption.
• Contribute to technical direction, best practices, and reusable modernization frameworks that can be leveraged across Bentley.
• Help establish and share expertise in a rapidly evolving AI domain.
• This role does not require travel.
• Requires sitting or standing at will while performing work on a computer (or any other physical requirements).

Required Qualifications

• Strong software development background with ownership of production systems.
• Experience building, maintaining, or modernizing complex software applications.
• Demonstrated understanding of software performance, reliability, scalability, testing, and failure modes.
• Practical experience applying AI, machine learning, inference pipelines, optimization techniques, or intelligent automation to real-world problems.
• Systems-oriented mindset with the ability to bring structure to ambiguous technical challenges.
• Experience designing pipelines, feedback loops, iterative systems, or large-scale developer tooling.
• Strong communication skills and the ability to collaborate with technical and non-technical stakeholders.

Preferred Qualifications

• Experience with Rust, C++, C, or Fortran.
• Experience modernizing legacy systems or migrating applications to cloud-native architectures.
• Background in DevOps, CI/CD pipelines, testing frameworks, simulation systems, benchmarking, or validation tooling.
• Experience working with engineering, scientific, mathematical, or simulation software.
• Familiarity with cloud platforms and distributed systems.
• Interest in emerging AI development patterns, agentic workflows, and software transformation technologies.

Success Looks Like

• Successful candidates will demonstrate the ability to: Modernize existing systems rather than only building greenfield solutions.
• Make thoughtful tradeoffs between performance, reliability, latency, maintainability, and cost.
• Apply AI in practical, production-oriented ways.
• Navigate ambiguity while maintaining engineering rigor.
• Build systems that continuously improve and scale over time.

Who Thrives in This Role

• Engineers who enjoy applying AI to real-world engineering challenges and measuring success through production impact.
• Builders who are comfortable working within large, evolving codebases.
• Generalists who enjoy moving across languages, tools, and technical domains.
• Engineers who embrace continuous learning as AI capabilities and modernization approaches evolve.

What We Offer

• Step into a collaborative work environment where ideas flourish, and teamwork propels us forward towards shared success.
• An attractive salary and benefits package.
• Bentley Impact Day: take a day off from work to volunteer with an organization of your choice.
• Celebrate milestone achievements and moments that matter through our colleague recognition award programs and our Bentley Achievers platform.
• A commitment to inclusion, belonging and colleague wellbeing through global initiatives and resource groups.

Be part of a company committed to making a real difference by advancing the world’s infrastructure for better quality of life, where your contributions help build a more sustainable, connected, and resilient world. Discover our latest user success stories for an insight into our global impact.

Who We Are

Bentley Systems (Nasdaq: BSY) is the infrastructure engineering software company. We provide innovative software to advance the world’s infrastructure – sustaining both the global economy and environment. Our industry-leading software solutions are used by professionals, and organizations of every size, for the design, construction, and operations of roads and bridges, rail and transit, water and wastewater, public works and utilities, buildings and campuses, mining, and industrial facilities. Our offerings, powered by the iTwin Platform for infrastructure digital twins, include MicroStation and Bentley Open applications for modeling and simulation, Seequent’s software for geoprofessionals, and Bentley Infrastructure Cloud encompassing ProjectWise for project delivery, SYNCHRO for construction management, and AssetWise for asset operations. Bentley Systems’ 5,200 colleagues generate annual revenues of more than $1 billion in 194 countries.

Equal Opportunity Employer: Bentley is an equal opportunity employer and considers all qualified applicants for employment without regard to race, color, sex, sexual orientation, gender identity, disability, pregnancy, protected veteran status, religion, national origin, age, genetic information or any other protected characteristic. This commitment extends to all aspects of employment, including, but not limited to, hiring, placement, promotion, compensation, and training. Know Your Rights as an applicant under the law.

Bentley Policy on EEO, Affimative Action and Pay Transparency Non-Discrimination Bentley participates in e-Verify / Bentley participate in e-Verify / Right to Work Notice Request an Accommodation: As an Equal Opportunity Employer, Bentley is committed to providing reasonable accommodations to applicants with disabilities. We encourage you to request a reasonable accommodation if you are not able to fully use or access our online application system. You can make an accommodation request by calling 610-458-5000 or sending us an email at [e-mail]

At Bentley, you'll help shape the future of infrastructure with innovative solutions, a global impact, and a culture that values growth, collaboration, and sustainability. Built by engineers for engineers, Bentley has been the leading global provider of infrastructure engineering software for 40 years. Join us on our continued journey leading industry change.

This is a Hybrid role.

Request an Accommodation: As an Equal Opportunity Employer, Bentley is committed to providing reasonable accommodations to applicants with disabilities. We encourage you to request a reasonable accommodation if you are not able to fully use or access our online application system. You can make an accommodation request by calling 610-458-5000 or sending us an email at [e-mail]

Bentley Systems (Nasdaq: BSY) is the infrastructure engineering software company. We provide innovative software to advance the world’s infrastructure – sustaining both the global economy and environment. Our industry-leading software solutions are used by professionals, and organizations of every size, for the design, construction, and operations of roads and bridges, rail and transit, water and wastewater, public works and utilities, buildings and campuses, mining, and industrial facilities. Our offerings, powered by the iTwin Platform for infrastructure digital twins, include MicroStation and Bentley Open applications for modeling and simulation, Seequent’s software for geoprofessionals, and Bentley Infrastructure Cloud encompassing ProjectWise for project delivery, SYNCHRO for construction management, and AssetWise for asset operations. Bentley Systems’ 5,200 colleagues generate annual revenues of more than $1 billion in 194 countries.