Senior Platform Engineer - Go, Python, AWS, Kubernetes/EKS

PortX; Mercer Island (WA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Equity opportunities

High impact role

Insurance (medical, dental, vision)

401(k)

Unlimited PTO

Collaborative team culture

Job summary

PortX, a leading AI-powered data and integration company, seeks a Senior Platform Engineer to build and manage a Kubernetes-based hosting platform on AWS. You will own infrastructure, tooling, and platform security, collaborating with development teams to run high-availability services.

You will apply Go, Python, and shell scripting to optimize microservices, drive SOC 2 compliance, and promote best practices in Kubernetes, Docker, and CI/CD workflows.

Qualifications

• Experience operating Kubernetes in production at scale (5+ years).
• Strong programming skills in Python and Go.
• Solid shell scripting and Linux experience.
• Hands-on with IaC tools (Pulumi or Terraform).
• Familiarity with CI/CD—GitHub Actions preferred.

Responsibilities

• Build and manage cloud infrastructure using Pulumi on AWS.
• Engineer platform technologies across multiple languages and tools.
• Support and evolve internal platform tooling and docs.
• Regularly update infrastructure components for security and SOC2 readiness.
• Collaborate across disciplines in a fast-moving environment.

Skills

Kubernetes

Go

Python

Shell scripting

IaC: Pulumi

Terraform

Docker

Helm

GitHub Actions

AWS basics

Observability

CodeGen AI

Tools

Pulumi

Terraform

GitHub Actions

Job description

Senior Platform Engineer

PortX is a leading AI-powered data and integration company for modern banking, bringing systems together and data to life through our unified platform for modern integration, governed customer 360 data, and next-generation payments.

We're in strong growth mode, with an opportunity for a Senior Platform Engineer, working in a high-impact environment that's open and rewarding, so it’s a great time to join.

Role overview:

This position is responsible for building applications and tools to manage infrastructure and continuous deployment systems for PortX’s Kubernetes-based hosting platform in AWS. The platform provides highly available and secure microservices API hosting for financial institutions using cloud-native technologies.

Responsibilities include:

• Build and manage secure, highly-available, cloud infrastructure using Pulumi.
• Engineer new platform technologies using a variety of languages and tools.
• Support and enhance our internal platform tooling.
• Regularly update all infrastructure components to ensure platform security.
• Ensure systems meet SOC 2 compliance.
• Create and manage networking integrations with customer networks.
• Perform monitoring and performance tuning of Java, Python, Go, and TypeScript based microservice applications.
• Create documentation and diagrams.
• Evangelize Kubernetes, Docker and infrastructure best practices.
• Support development teams configuring applications to run on the infrastructure.
• Troubleshoot production issues and determine the root cause using industry standard observability tools.
• Troubleshoot networking issues using industry standard tools.
• Collaborate across a variety of technology disciplines in a fast-moving environment.

Technical skills required:

• Strong Troubleshooting and CodeGen AI skills (GitHub Copilot or Claude Code preferred)
• Familiarity with GitOps operating frameworks and best practices
• Common AWS services (IAM, S3, EC2, RDS, ElastiCache)
• AWS
  VPC networking (subnets, routing, multi-AZ)
• Kubernetes (5+ years) in production at scale) (preferably EKS)
• Docker (Dockerfile best practices, Multi-stage builds)
• Helm (including Helm chart best practices)
• Common CI systems (GitHub Actions preferred)
• Strong competency with Python and Go
• Linux Shell scripting (5+ years)
• Knowledge and experience working with IaC tools such as Pulumi or Terraform
• Common security best practices

This is a chance to join a fast-growing company at the forefront of AI-powered banking integration and data innovation. You will work in a collaborative, high-impact environment where your technical expertise and customer-facing skills directly influence business growth and customer success. At this stage, ownership isn't a talking point - it's the job. You'll drive your space end to end, which means your time and availability flex with what the work actually needs, not a fixed clock. If that type of environment is energizing rather than exhausting, you'll thrive here.

PortX Principles:

• Do Everything with Purpose
• Challenge the Ordinary
• Check your Ego at the Door

Benefits:

• Competitive compensation: attractive equity opportunities at a venture-backed startup
• High Impact Role: Have a direct and immediate impact on revenue & scaling the business
• Insurance (medical, dental, vision)
• 401(k)
• Unlimited PTO
• Be a part of a collaborative and highly motivated team culture where your voice is heard and you're not just a number in a big company

US Citizenship required - No Visa Sponsorship available