Modernization Architect

Who you will work with:As a Senior Principal at Slalom, you will help clients accelerate large scale technology transformation by turning decades-old mainframe code into agile, cloud-native systems. This role blends deep systems understanding of z/OS with modern cloud, DevOps, and AI-assisted engineering practices. You’ll work across multiple domains, from code analysis and business-logic extraction to automated refactoring and re-platforming helping enterprises transition mission-critical workloads to hyperscaler infrastructure.What you will do:* Understand, extractand document business logic from mainframe applications.* Modernize and refactor legacy code using automated transformation tools and AI coding agents.* Reimagine monolithic systems into cloud-native microservices and event-driven architectures.* Build, containerize, and deploy workloads to AWS (or other hyper scaler platforms).* Prototype modernization accelerators and proof-of-concepts using LLMs, code analysis tools, and custom pipelines.* Collaborate with architects, operators, and data engineers to ensure secure and efficient modernization patterns.What you will bring:* Hands-on experience developing or operating on IBM mainframes (z/OS).* Proficiency in one or more mainframe languages: COBOL, PL/I, HLASM, JCL, etc.* Knowledge of z/OS fundamentals: CICS, DB2, VSAM, batch scheduling, system utilities.* Experience deploying workloads to a major cloud provider (AWS, Azure, or GCP).* Experience leveraging LLMs and coding agents in software development workflows.* Strong prototyping and POC development capability in dynamic environments.* Thrives in fast-moving, collaborative and entrepreneurial teams.Preferred Qualifications* Familiarity with Code-as-Data and structured intermediate representation (IR) concepts.* Experience parsing or analyzing source grammars(ANTLR4, Tree-Sitter, recursive descent, etc.).* Experience with modernization frameworks such as AWS Blu Age or AWS Mainframe Modernization (Transform for z/OS).* Experience with CI/CD pipelines,IaC(CloudFormation/Terraform), and container orchestration (Kubernetes/OpenShift).* Understanding of legacy data integration (DB2, VSAM, IMS) with modern cloud data stores.* Experience designing automated test harnesses for workload equivalence validation.* Awareness of enterprise security and IAM frameworks (RACF, IAM roles, encryption-at-rest/in-transit).* Experience fine-tuning or prompting code-centric LLMs (e.g., Amazon Q Developer, Bedrock, Claude) for code translation, documentation, or rule extraction.* Understanding of retrieval-augmented generation (RAG) patterns, vector databases, and agentic orchestration for code analysis pipelines.* Consulting or systems-integration experience.About UsSlalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always. From strategy through delivery, our agile teams across 52 offices in 12 countries partner with clients to co-create powerful customer experiences, modern ways of working, and meaningful impact. What sets us apart? We believe work should be challenging and fulfilling, not perfect, but possible. That’s why we prioritize purpose, flexibility, connection, and recognition, so our people can thrive and love what they do, most days. Compensation and BenefitsSlalom prides itself on helping team members thrive in their work and life. As a result, Slalom is proud to invest in benefits that include meaningful time off and paid holidays, parental leave, 401(k) with a match, a range of choices for highly subsidized health, dental, & vision coverage, adoption and fertility assistance, and short/long-term disability. We also offer yearly $350 reimbursement account for any well-being-related expenses, as well as discounted home, auto, and pet insurance.Slalom is committed to fair and equitable compensation practices. For this role, we are hiring at the following levels and targeted base pay salary ranges: The targeted base salary pay range for Senior Principal in San Diego, Los Angeles, Seattle, Orange County, Washington DC, Houston, NJ, NY, Westchester, Boston is $186,000 to $257,000. The target pase salary range for Senior Principal in East Bay, San Francisco, and Silicon Valley is $203,000-$281,000. For all other slalom locations in the US, the target base salary range for Senior Principal is $171,000-$236,000. In addition, individuals may be eligible for an annual discretionary bonus. Actual compensation will depend upon an individual’s skills, experience, qualifications, location, and other relevant factors. The salary pay range is subject to change and may be modified at any time.    We will accept applicants until July 14th, or until the position is filled.We are committed to pay transparency and compliance with applicable laws. If you have questions or concerns about the pay range or other compensation information in this posting, please contact us at: [1] View email address on us.fitly.work. Please note, this recipient is not able to support recruitment inquiries beyond this purpose.EEO and AccommodationsSlalom is an equal opportunity employer and is committed to attracting, developing and retaining highly qualified talent who empower our innovative teams through unique perspectives and experiences. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veterans’ status, or any other characteristic protected by federal, state, or local laws. Slalom will also consider qualified applications with criminal histories, consistent with legal requirements. Slalom welcomes and encourages applications from individuals with disabilities. Reasonable accommodations are available for candidates during all aspects of the selection process. Please advise the talent acquisition team or contact [2] View email address on us.fitly.work if you require accommodations during the interview process. ReferencesVisible links1. mailto:View email address on us.fitly.work. mailto:View email address on us.fitly.work