Sr Software Development Engineer - Core Platform Integration

Workday•Pleasanton, CA

1d•$148,200 - $264,000•Hybrid

About The Position

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 our acquired companies. Workday has acquired several companies in the last couple of years that run multiple services across cloud service providers AWS and GCP with their own infrastructure patterns, CI/CD pipelines, and operational practices. 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. That means migrating workloads off CSP lock-in services (managed databases, proprietary queues, vendor-specific identity, etc.) and onto standardized CP2 building blocks for compute, networking, observability, CI/CD, and security. This is a small, high-leverage team working directly with acquisition engineering leads, IPE platform owners, and Workday SREs. We operate in the open, driving architecture review boards, building migration scorecards, sizing onboarding effort, and producing the roadmap that shapes both what the IPE platform must build and what acquired teams must refactor. The work is technical, cross-organizational, and high-impact. 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. You will partner with engineering leads at 2–3 assigned acquired companies to inventory their services, dependencies, and CSP-specific footprint (managed DBs, IAM, networking, queues, secrets, observability stack, etc.). You will produce a per-service migration plan: what stays, what gets refactored onto CP2 paved-road components, and a T-shirt-sized effort estimate (S/M/L). If and as needed, you will rewrite Terraform/Terragrunt modules to target CP2, port CI/CD pipelines, swap CSP-locked services for CP2 equivalents, and re-instrument observability (logs, metrics, traces, SLOs) to Workday standards. We will rely on you to identify gaps in the CP2 paved road and feed concrete, well-scoped feature requests back to IPE platform teams — with enough technical specificity that they can be prioritized and built. You will help establish repeatable migration patterns (a "playbook") so future acquisition onboarding is faster than the first. You will be an active participant in Architecture Review Boards, separating hard blockers (re-architecture required) from soft blockers (tool swaps), and help drive consensus across IPE and acquisition teams. This role involves collaborating with teams across multiple locations and time zones. You will need to be adept at communicating effectively and building strong relationships with colleagues in diverse locations.

Requirements

7+ years of software/infrastructure engineering experience.
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.
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).
Experience refactoring IaC across accounts/projects/regions.
Strong coding skills in Go and/or Python.
Solid CI/CD experience (GitHub Actions, GitLab CI, Jenkins, ArgoCD, Flux, or Harness).
Comfort redesigning CI/CD pipelines.
Working knowledge of observability stacks (Prometheus, Grafana, OpenTelemetry, GCP Operations Suite, or equivalents).
Practical experience with at least one managed cloud database (Aurora, Cloud SQL, Spanner, RDS) including migration or replication.
Strong collaborator, able to earn trust.
Ability to write clearly (migration plans, RFCs, runbooks).
Pragmatic about "paved road" tradeoffs.
Comfortable with ambiguity.

Nice To Haves

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

Responsibilities

Plan, implement, and execute migration of acquired company services to CP2.
Own technical delta analysis for assigned acquisitions.
Design migration approaches.
Write code, IaC, and automation for service migration.
Partner with engineering leads at acquired companies to inventory services, dependencies, and CSP-specific footprint.
Produce per-service migration plans including effort estimates.
Rewrite Terraform/Terragrunt modules, port CI/CD pipelines, swap CSP-locked services, and re-instrument observability.
Identify gaps in the CP2 paved road and provide feature requests to IPE platform teams.
Help establish repeatable migration patterns (playbook).
Participate in Architecture Review Boards to drive consensus.
Collaborate with teams across multiple locations and time zones.