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

PortX; Seattle (WA); On-site; USD 150,000 - 230,000; Full time

Benefits offered by this job

Equity opportunities

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 our Kubernetes-based hosting platform on AWS. You will drive secure, highly available infrastructure, tooling, and platform enhancements across services in a fast-growing environment.

Responsibilities include optimizing infrastructure, ensuring SOC 2 compliance, and collaborating with development teams to deploy reliable microservices.

Qualifications

• 5+ years Kubernetes in production at scale.
• Strong Python and Go proficiency.
• Experience with IaC tools such as Pulumi or Terraform.

Responsibilities

• Build and manage secure, highly-available cloud infrastructure in AWS.
• Engineer platform technologies using multiple languages.
• Support and enhance internal platform tooling.
• Update infrastructure components for security and SOC 2 compliance.
• Create and manage networking integrations with customer networks.
• Troubleshoot production issues using observability tools.

Skills

Kubernetes production experience

Python & Go

Linux shell scripting

CodeGen AI awareness

GitOps practices

AWS / cloud

Networking & SOC 2

Observability & debugging

Collaboration across teams

Security best practices

Tools

Kubernetes (EKS)

Docker

Helm

Pulumi

Terraform

GitHub Actions

Pulumi/Terraform (IaC)

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