Senior SDET (Software Development Engineer in Test)

Apex Trader Funding Inc.; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Apex Trader Funding Inc. is seeking a Senior SDET to design and evolve scalable automated testing systems. You will shape our Playwright-based framework, improve CI/CD quality gates, and enable the engineering org to deliver high-quality software rapidly.

You will build reusable test infrastructure, mentor teammates, and drive testing improvements across UI, API, and distributed systems while ensuring traceability and reliable metrics.

Qualifications

• 5–8+ years in software testing/engineering with senior-level automation experience.
• 3+ years designing Playwright automation frameworks.
• Strong engineering background: TypeScript/Node.js, async patterns, SOLID principles.
• Strong API and network-level understanding.
• CI/CD experience with Docker and execution pipelines.
• Strong debugging skills across UI, API, and distributed systems.

Responsibilities

• Architect, build, and maintain Playwright-based automation frameworks using TypeScript/Node.js.
• Develop reusable fixtures, helpers, abstractions, and test infrastructure.
• Implement network mocking/stubbing, service virtualization, API layers, data factories, and contract testing.
• Build selector strategies, concurrency models, and fault-tolerant automation.
• Integrate suites into CI/CD with parallelization, retries, flake analysis, and intelligent test selection.
• Own quality-related telemetry: traces, screenshots, logs, metrics.
• Build quality dashboards tracking stability, coverage, and reliability.
• Influence system design for testability.
• Build component, integration, and contract testing layers.
• Mentor QAEs, STEs, and developers on testing best practices.
• Document patterns, tools, and guidelines.
• Drive evolution of testing ecosystem.

Skills

Playwright automation

TypeScript/Node.js

CI/CD

API testing

Test automation

Debugging

Tools

Docker

Grafana

Datadog

OpenTelemetry

Lighthouse

k6

Job description

Apex Trader Funding is a leading proprietary trading firm specializing in futures trading. As a fully remote company, we empower employees through innovation, transparency, accountability, and continuous growth. Our mission is to create opportunity by combining cutting-edge technology with a culture grounded inintegrity, collaboration, operational excellence, and long-term success.

We believe great results come from diverse perspectives, clear expectations, and trust. At Apex,we encourage individualsto take ownership of their work while participating in a highly skilled, supportive, and results-driven team.

Our values,integrity, collaboration, operational excellence, continuous growth, and attention to detail, guide how we work, make decisions, and deliver results.

GENERALSUMMARY

We’re looking for a Senior SDET who blends world-class software engineering skills with a passion for building scalable, reliable, and maintainable automated testing systems. In this role, you will design and evolve our automation frameworks, strengthen developer workflows, enhance CI/CD quality gates, and enable the engineering org to deliver high-quality software at speed. You’ll engineer the systems that make quality measurable, repeatable, and automated —not just test the product, but shape how the entire organization tests.

PRINCIPAL DUTIES & RESPONSIBILITES

• Architect, build, and maintain Playwright-based automation frameworks usingTypeScript/Node.js.
• Develop reusable fixtures, helpers, abstractions, and test infrastructure.
• Implement network mocking/stubbing, service virtualization, API layers, data factories,and contract testing.
• Build selector strategies, concurrency models, and fault‑tolerant automation.
• Integrate suites into CI/CD with parallelization, retries, flake analysis, and intelligenttest selection.
• Own quality-related telemetry: traces, screenshots, logs, metrics.
• Build quality dashboards tracking stability, coverage, and reliability.
• Influence system design for testability.
• Build component, integration, and contract testing layers.
• Mentor QAEs, STEs, and developers on testing best practices.
• Document patterns, tools, and guidelines.
• Drive evolution of testing ecosystem.

MINIMUM REQUIREMENTS

• 5–8+ years in software testing/engineering with senior-level automation experience.
• 3+ years designing Playwright automation frameworks.
• Strong engineering background: TypeScript/Node.js, async patterns, SOLID principles.
• Strong API and network-level understanding.
• CI/CD experience with Docker and execution pipelines.
• Strong debugging skills across UI, API, and distributed systems.

DESIRABLE

• Contract testing (Pact), schema validation, or service virtualization.
• Experience with observability systems (Grafana, Datadog, OpenTelemetry).
• Performance testing (Lighthouse, Playwright Tracing, k6).
• Visual regression tools.
• Cloud experience (AWS, Azure, GCP).

Originally posted on Himalayas