Senior Software Development Engineer in Test, SDET

Ashby Electrical Limited

Senior SDET architecting and building automated testing frameworks for Todyl's back-end systems. Collaborating with teams to ensure high quality and reliability in cybersecurity solutions.

Posted 4/24/2026full-timeDenver • Colorado • 🇺🇸 United StatesSenior💰 $155,000 - $185,000 per yearWebsite

Tech Stack

Tools & technologies

Distributed SystemsDNSGRPCLinuxPythonTCP/IP

About the role

Key responsibilities & impact

Design, develop and execute test plans for networking software and hardware components.
Implement automated test systems covering regression, performance and security.
Collaborate with QA, SRE and engineering teams to define test strategies and integrate into CI/CD pipelines.
Validate distributed systems consisting of Linux-based appliances, services and APIs.
Conduct performance, scalability and security testing across complex networked environments.
Simulate real-world traffic and inject faults to test reliability under various conditions.
Identify, document and track bugs or performance issues, ensuring high system quality.

Requirements

What you’ll need

10+ years of proven experience in software quality assurance, with deep expertise in quality processes, tools, and metrics, including the development of testing strategies from the ground up
Hands-on experience with test automation frameworks, including architecture design, development, and scripting.
Experience working in Agile development environments using software build tools, CI/CD integrations, deployment process and code quality checking tools
Strong networking fundamentals and deep understanding of protocols like TCP/IP, DNS and DHCP.
Experience designing test frameworks and automation infrastructure from scratch.
Proficient in reviewing and interpreting PCAP files using tools like Wireshark or tcpdump.
Hands-on with network testing tools such as iperf, curl, mtr and Wireshark.
Experience developing and executing test plans for network software/hardware systems.
Proven track record in Linux system administration and scripting (e.g., Bash, Python).
Comfortable working with REST/gRPC APIs and debugging network interactions.

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Ashby Electrical Limited Website LinkedIn All Job Openings 11 - 50 employees Founded 2018 🚗 Transport Electricity
Transport
Construction Ashby Electrical Limited is a company established in 2018 that specializes in delivering cost-effective and sustainable electrical solutions. They are committed to excellence in service and quality, focusing on building strong relationships with their clients across various sectors. Their expertise ranges from domestic and commercial electrical installations to specialized services in the rail industry, emphasizing trust and integrity throughout their project execution. Senior Software Development Engineer in Test, SDET 🔥 52 minutes ago 🏢🏡 Denver – Hybrid 💵 $155k - $185k / year ⏰ Full Time 🟠 Senior ⚙️ Software Development Engineer in Test (SDET) Apply Now Find Hiring Managers Customize resume for this job Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Design, develop and execute test plans for networking software and hardware components.
Implement automated test systems covering regression, performance and security.
Collaborate with QA, SRE and engineering teams to define test strategies and integrate into CI/CD pipelines.
Validate distributed systems consisting of Linux-based appliances, services and APIs.
Conduct performance, scalability and security testing across complex networked environments.
Simulate real-world traffic and inject faults to test reliability under various conditions.
Identify, document and track bugs or performance issues, ensuring high system quality. 🎯 Requirements
10+ years of proven experience in software quality assurance, with deep expertise in quality processes, tools, and metrics, including the development of testing strategies from the ground up
Hands-on experience with test automation frameworks, including architecture design, development, and scripting.
Experience working in Agile development environments using software build tools, CI/CD integrations, deployment process and code quality checking tools
Strong networking fundamentals and deep understanding of protocols like TCP/IP, DNS and DHCP.
Experience designing test frameworks and automation infrastructure from scratch.
Proficient in reviewing and interpreting PCAP files using tools like Wireshark or tcpdump.
Hands-on with network testing tools such as iperf, curl, mtr and Wireshark.
Experience developing and executing test plans for network software/hardware systems.
Proven track record in Linux system administration and scripting (e.g., Bash, Python).
Comfortable working with REST/gRPC APIs and debugging network interactions. Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

test automation frameworkstest plansnetwork software testingLinux system administrationscriptingperformance testingsecurity testingtest strategiesnetwork protocolsAPI debugging

Soft Skills

collaborationproblem-solvingdocumentationquality assurancecommunication