Sr Software Development Engineer - Core Platform Integration

The Core Platform Integration Team is a new centralized team within Workday’s Core Services organization that sits at the intersection of Workday's IPE (Infrastructure Platform Engineering) organization and acquired companies. Our charter is to bring these companies onto CP2, Workday's cloud-agnostic 'paved road' platform, so that 100% of services can run on any CSP. As a Senior Software Engineer on this team, you'll be one of the hands-on technical engineers working closely with acquired company engineering teams to plan, implement, and execute their migration to CP2. You'll own the technical delta analysis for assigned acquisitions, design the migration approach, and write the code, IaC, and automation that gets services moved.

Responsibilities

Own the technical delta analysis for assigned acquisitions; Design the migration approach; Write the code, IaC, and automation that gets services moved; Partner with engineering leads at 2-3 assigned acquired companies to inventory their services, dependencies, and CSP-specific footprint; Produce a per-service migration plan with T-shirt-sized effort estimate; Rewrite Terraform/Terragrunt modules to target CP2, port CI/CD pipelines, swap CSP-locked services for CP2 equivalents, and re-instrument observability to Workday standards; Identify gaps in the CP2 paved road and feed feature requests to IPE platform teams; Help establish repeatable migration patterns (playbook); Participate in Architecture Review Boards; Collaborate with teams across multiple locations and time zones.

Requirements

7+ years of software/infrastructure engineering experience, with at least 3 years operating production workloads on AWS and/or GCP; Proficiency in using the latest AI tools (Claude Code, Cursor, Augment) as a force multiplier to accelerate code understanding, migration work, and documentation; Bachelor’s degree in Computer Science, Engineering, or related discipline, or equivalent practical experience; Strong, current Kubernetes experience (EKS, GKE, or equivalent); Production proficiency in Terraform (Terragrunt a plus) as primary IaC tool, and experience refactoring IaC across accounts/projects/regions; Strong coding skills in Go and/or Python for automation, migration tooling, and operators, not just glue scripts; Solid CI/CD experience (GitHub Actions, GitLab CI, Jenkins, ArgoCD, Flux, or Harness) and comfort redesigning pipelines, not just maintaining them; Working knowledge of observability stacks (Prometheus, Grafana, OpenTelemetry, GCP Operations Suite, or equivalents) and what good SLI/SLO instrumentation looks like; Practical experience with at least one managed cloud database (Aurora, Cloud SQL, Spanner, RDS) including migration or replication; Strong collaborator. You know how to earn trust with a team whose code you're about to change; You write clearly. Migration plans, RFCs, and runbooks are part of the job; You're pragmatic about 'paved road' tradeoffs — you can hold the line on standards without being dogmatic when an acquisition has a legitimate reason to deviate; You're comfortable with ambiguity. The first few acquisitions will not have a clean playbook; you'll help write it.

Nice to have

Multi-Cloud experience with GCP and AWS; Familiarity with secrets management, IAM least-privilege design, and basic security hygiene (vulnerability scanning, image signing, mTLS); Experience with security auditing and compliance frameworks; Terragrunt

Benefits

Workday Bonus Plan or role-specific commission/bonus; annual refresh stock grants; comprehensive benefits; Flex Work (flexible schedule with at least 50% in office/field)