Software Development Engineer in Test (Linux, C) at Cloudmark
San Francisco, CA, US
Company overview
Cloudmark stops spam for over a billion people. We protect the messaging infrastructure of more than 120 tier-one service providers worldwide, including AT&T, Verizon, Comcast, Cox, Swisscom, and NTT. We are expanding our product line to prevent other malicious online activities and to make messaging safe.

Objective of position
We seek an engineer who is passionate about software quality to join our Test team.


Test our software to reveal bugs before we release it to customers or production systems
Investigate new code to discover flaws and risks
Isolate root causes of bugs and problem software behavior
Build multi-system test environments and automated test suites
Collaborate with developers, product managers, operations engineers, and fellow testers to create and execute an effective testing strategy
Learn how Cloudmark's technology works, and evolve your skills with it.

Solid Linux admin skills (not necessarily a professional sysadmin, but at least a talented amateur)
An understanding of how computers work and how software breaks (what causes crashes, how to find memory leaks, etc.)
A conceptual grasp of application-level Internet protocols
Excellent written and verbal communication skills.
Preferred Qualifications

Knows how to find bugs and loves to see them get fixed
Is intellectually curious and capable of working with a minimum of supervision while collaborating with colleagues in multiple departments
Has a background with C and can use Linux environment debugging tools (strace, gdb)
Knows how to analyze network traffic on Linux (netstat, tcpdump, Wireshark)
Is capable of writing automated tests in Python
Can write Bash shell scripts and use tools like sed, grep, and awk
Can work with VMWare, and wants to learn Docker
Is capable of testing REST APIs
Can administer email on Linux (sendmail, postfix, or exim).
Education and experience

Bachelor's degree or equivalent industry experience
3+ years of professional experience as a software test engineer, system programmer, software developer, system administrator, developer support engineer, or sales engineer, working in a Linux environment.
  • Boston

    Summit Partners

    222 Berkeley Street, 18th floor

    Boston, MA 02116

    United States

    T: +1 617.824.1000

    F: +1 617.824.1100


    Summit Partners LLP

    Queensberry House, 3rd Floor
    3 Old Burlington Street

    London W1S 3AE

    United Kingdom

    T: +44 (0)20 7659 7500

    F: +44 (0)20 7659 7550

  • Menlo Park

    Summit Partners

    200 Middlefield Road, Suite 200

    Menlo Park, CA 94025

    United States

    T: +1 650.321.1166

    F: +1 650.321.1188