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

PortX; Seattle (WA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation with equity

High impact role driving revenue &cale

Insurance (medical, dental, vision)

401(k)

Unlimited PTO

Collaborative team culture

Job summary

PortX is seeking a Senior Platform Engineer to design and manage the cloud infrastructure powering our Kubernetes-based hosting platform in AWS. You will build secure, highly available systems, promote platform tooling, and ensure SOC 2-aligned security practices while collaborating across teams in a fast-moving environment.

You’ll drive end-to-end platform capabilities with Pulumi/Terraform, Kubernetes, and CI/CD, supporting developers and customers as we scale our AI-powered data integration

Qualifications

• Kubernetes in production at scale (5+ years), preferably on AWS EKS.
• Strong IaC experience with Pulumi or Terraform.
• Troubleshooting and debugging across cloud infra and apps.
• Familiarity with GitOps frameworks and CI/CD pipelines.
• Security best practices and cloud-native security awareness.
• Experience with observability, monitoring, and incident response.

Responsibilities

• 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.

Skills

Troubleshooting

GitOps

CI/CD

Security best practices

Observability

Collaboration

Tools

Kubernetes

Docker

Helm

Pulumi

Terraform

AWS

GitHub Actions

Python

Go

Linux shell

Networking

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