[Hiring] Senior Platform Engineer @The Job Sauce

Role Description

As a Senior Platform Engineer at Loancrate, you’ll ship platform improvements to production early and often - spanning infrastructure, developer tooling, and shared libraries. Within your first month, you'll be diving into mission-critical work such as:

• Designing and building the systems that let engineers deploy dozens of times per day with confidence - from our Buildkite CI/CD pipelines and per-PR ephemeral environments to our IaC-managed AWS infrastructure.
• Creating self-serve developer experiences - local dev tooling, templates, golden paths, and CI-integrated workflows - so “the right thing” is the easy thing.
• Pioneering tooling and best practices for AI-first software engineering - from setting up background agents to autonomously make code changes to designing frameworks that allow AI product experiences to self-optimize in response to user interactions.
• Extending our internal TypeScript tooling - from schema/code generation to data access libraries - so teams can build features faster with safer, more consistent primitives.
• Making Loancrate's platform observable and self-healing - instrumenting our services with Datadog, building alerting that actually signals rather than spams, and reducing the blast radius of incidents before they happen.
• Baking security into our platform defaults - across infra and developer tooling - while keeping engineering velocity high.
• Solving interesting scaling problems as our AI-native mortgage platform grows - from Aurora PostgreSQL tuning to Kafka throughput to cost-efficient compute autoscaling.

Qualifications

• Experience building internal platforms / developer tooling: code generation, CLIs, templates, shared SDKs, or frameworks that improve engineering velocity.
• Strong TypeScript skills and API design taste - you enjoy building stable primitives that other engineers rely on.
• Deep AWS experience across compute, networking, storage, and security (ECS, Lambda, VPC, ALB, IAM, RDS, ElastiCache, MSK, OpenSearch, S3, CloudWatch, CloudTrail, GuardDuty).
• Strong Terraform and/or Pulumi proficiency: modules, workspaces, and CI-driven plan/apply workflows.
• Experience designing and operating CI/CD systems that help large engineering teams ship frequently and confidently.
• Track record building production observability stacks (Datadog, CloudWatch, Sentry, distributed tracing, SLOs).
• You’ve built “paved roads” that bake in secure, reliable defaults (instrumentation helpers, policy-as-code, safe-by-default deployment patterns).
• Security-first mindset - you proactively harden infrastructure without slowing teams down.
• Aurora PostgreSQL operations at scale: backups, PITR, failover, read replicas, query tuning.
• Comfort with Docker and container orchestration environments.
• Reliability engineering mindset: SLOs, error budgets, incident response.
• Curiosity about the unique infrastructure demands of AI and LLM workloads.
• Strong written communication - you document decisions and help the team understand the systems they depend on.

Requirements

• Own and evolve our AWS infrastructure using Terraform and Pulumi Cloud - treating infrastructure as a product that engineering teams depend on.
• Design and maintain internal developer tooling and libraries that standardize how we build and ship - code generation, shared SDKs, data access patterns, and service scaffolding.
• Create and maintain golden paths for common workflows (new service setup, background jobs, event streams, APIs) so teams can ship quickly with built-in security and observability (and consistent defaults across services).
• Build and maintain CI/CD pipelines and per-PR ephemeral environments that make deploying feel easy and safe.
• Drive reliability through SLOs, auto-scaling, incident response, and postmortems - and build systems that make the next incident less likely.
• Create observability tooling and shared instrumentation libraries that give engineers real-time insight into their services.
• Enforce security best practices across IAM, secrets management, encryption, audit logging, and DDoS protection.
• Own the reliability and performance of our data platform (Aurora PostgreSQL) - provisioning, backups, failover, and tuning - and build tooling that makes safe usage the default.
• Reduce toil through automation and self-service tooling so engineers can move fast without waiting on the platform.
• Contribute to architecture decisions and documentation, and participate in on-call rotation (shared by the whole engineering team).

Benefits

• Robust medical coverage (100% of employee + family premiums covered)
• Vision & dental coverage
• 401(k)
• HSA / FSA
• Remote-first culture - work from wherever you do your best work
• Flexible time off - we trust you to manage your time