Mid/Senior Software Development Engineer in Test

Company Description

Do you thrive in environments where you are empowered to make impactful decisions and bring clarity to complex problems? Do you want to be part of a fast-moving high-growth company? Come and join us at Spectrum Effect

Spectrum Effect's mission is to solve the most challenging and costly problems in the wireless industry through innovation and AI-powered automation. Our team is passionate about creating disruptive technologies, developing solutions with engineering excellence, and delivering substantial value to our customers. Deployed by leading mobile operators across the globe, our Spectrum-NET software solution performs automated AI-driven analysis of radio access networks. Spectrum-NET is a cloud-native, horizontally scalable solution based on a Kubernetes-orchestrated microservices architecture.

Our 60+ person team is located primarily in Seattle (U.S.) and Monterrey (Mexico), with team members enjoying ownership in our private company through stock options and competitive salaries. This is an amazing opportunity to join an emerging leader in the AI automation space and make a real impact on the mobile industry.

Job Description

As a Mid/Senior SDET, you will lead the design and implementation of our next-generation quality infrastructure. You will not just write tests; you will architect scalable Python automation frameworks, design complex Kubernetes test environments, and define the long-term quality strategy for our microservices. You will act as a technical mentor to the QA team, driving the adoption of software engineering best practices and ensuring our CI/CD pipelines are cutting-edge.

You will be the bridge between DevOps and Quality, ensuring that "infrastructure-as-code" principles are applied rigorously to our testing domain.

Responsibilities:

• Architect Automation Frameworks: Lead the design and development of scalable, object-oriented Python frameworks for E2E, Integration, and API testing. You will define the coding standards and architectural patterns for the QA team.
• Deep-Dive Defect Analysis: Go beyond "steps to reproduce." You will perform root cause analysis on complex failures, isolating defects within the microservice architecture, logs, or network layer before handing them off to developers.
• Infrastructure Strategy: Design and manage complex, containerized test environments using Kubernetes (EKS) and Helm. You will create and maintain advanced Helm charts from scratch and implement sophisticated deployment strategies for testing.
• Quality Gatekeeping & Reporting: Own the "Go/No-Go" metrics. You will be responsible for tracking the QA release status, interpreting quality metrics for stakeholders, and automating the reporting of test results to ensure clear, data-driven release decisions.
• CI/CD Architecture: Lead the design of our CI/CD pipelines (TeamCity), implementing advanced "Quality Gates," parallelization strategies, and automated environment provisioning to maximize engineering velocity.
• Drive Performance Engineering: Define the performance testing strategy. You will architect distributed load tests using Locust and analyze long-term benchmarking trends to guide product optimization.

Qualifications

What you need to have:

• Expert Proficiency in Python: You are a software engineer first. You have deep experience with OOP, design patterns, and building complex internal tools or frameworks.
• Strong Defect Isolation & Root Cause Analysis Skills: You have a proven ability to trace complex bugs through a distributed system. You don't just report symptoms; you diagnose the disease (e.g., identifying race conditions, memory leaks, or network latency).
• Kubernetes & Helm Mastery: You don't just use clusters; you understand them. Extensive experience managing EKS clusters, writing complex Helm charts from scratch, and troubleshooting low-level container networking or storage issues.
• CI/CD Expertise: Proven experience designing and optimizing build pipelines, enabling Continuous Integration and Continuous Deployment workflows.
• Mentorship Experience: A track record of elevating the technical skills of your peers through code reviews, documentation, and coaching.

Nice-to-Have Skills:

• Observability Stacks: Experience configuring and querying Prometheus, Grafana, or AlertManager to monitor test environments and visualize performance metrics.
• Infrastructure as Code (IaC): Experience with Terraform or Ansible.
• Cloud Architecture: Deep understanding of AWS services (EC2, S3, EKS, ECR, IAM) and cost-optimization for test environments.
• Security Testing: Experience integrating security scanners (SAST/DAST) into automation pipelines.
• Advanced Database Tuning: Ability to diagnose database performance bottlenecks (Mongo, InfluxDB, Postgres) in a testing context.

Additional Information

Why Join Us

• Dynamic Team: Collaborate with passionate experts driving real innovation in the telecom space
• Career Growth: Work on high-impact problems with real ownership and visibility
• Meaningful Work: Help shape the next generation of ML-driven network analytics
• Attractive Benefits: Competitive salary, stock options, and a flexible work environment

This is a hybrid position. The candidate should be based or willing to relocate to Monterrey, Mexico.

Do you have the technical chops and product sense to help shape the future of wireless automation? Apply now—your next big opportunity starts here.