Senior Software Engineer (Platform)

Mixmax is the #1 product helping Revenue teams to become automatically proactive by eliminating busywork for a flawless customer experience

We’re looking for a Senior Software Engineer (Platform) who wants high ownership: leading projects end-to-end, improving how services in our Node.js/TypeScript stack are built and operated, and creating paved paths that reduce toil across engineering. This is not a traditional DevOps or SRE role. We’re looking for a strong software engineer who is comfortable working in our Node.js/TypeScript ecosystem while improving platform and infrastructure capabilities.

This role can be based in LATAM or Europe. We cannot hire in the USA for this position.

• Ship meaningful improvements to our infrastructure, reliability and developer experience
• Take ownership of key platform areas and processes
• Partner with product engineers to understand pain points, unblock delivery, and raise standards and improve how we operate

• Strong experience with TypeScript/Node.js 
• Experience designing and operating production workloads on AWS, including services such as ECS/Fargate, Lambda, API Gateway, EventBridge, Application Load Balancers, and VPC networking.
• Familiarity with infrastructure-as-code (Terraform)
• Experience operating and supporting the systems you build, not just shipping and moving on
• Clear written communication. We're a distributed team, and documentation matters

• Experience with MongoDB, OpenSearch/Elasticsearch, or Redis/Valkey
• Familiarity with observability tooling (OpenTelemetry, Datadog, etc.)
• Experience building internal platforms or developer tools
• Familiarity with microservices / event-driven / serverless architectures
• Experience with networking (DNS, load balancing, VPCs, etc.)

We’re a globally distributed team.

We default to asynchronous communication, keep meetings lightweight, and rely on strong written docs to stay aligned. Our core stack is Node.js/TypeScript, React, MongoDB, and AWS. We mainly use Jira and Slack day-to-day.

At Mixmax, our vision is a world without busywork. Since our launch in 2015, Mixmax has become the product of choice for over 10,000 Sales and Customer Success teams to eliminate and automate repetitive work. This means more time to focus on what matters: engaging and serving the needs of customers.

We’re extraordinarily proud of the company we’ve built. We’re a driven, passionate, responsible group that values personal and professional growth equally. We take care of ourselves, our families, our customers, and one another. We believe in sustainable and diverse approaches to work and life, because optimizing for the long-term is the best path to success.

Our company is globally distributed, with remote team members worldwide. We offer competitive salaries, meaningful equity, and generous benefits. And with Mixmax, you get to work on a product people love.

💜 Why Mixmax?

• We’re a product-led company with strong product–market fit, ambitious new AI initiatives, and a clear mission
• You’ll join at a pivotal moment - shaping the next generation of our platform and helping define how Mixmax scales technically and culturally.
• You’ll work in a team that values ownership, creativity, and building things that matter, where good ideas can come from anywhere.
• You’ll have autonomy, trust, and direct access to leadership, with the support to explore high-leverage opportunities and make real impact.

Ready to lead and build at scale with a team that moves fast and cares deeply? We’d love to hear from you.