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

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