Jonah E. Safar

Work Experience

  • Tenable, Inc.

    Cambridge, MA
    Principal Engineer
    November, 2018 to Current
  • Thresher, LLC.

    McLean, VA (Remote Office)
    Engineering Services Manager
    January 2016 to August 2018

    • Introduced Agile tools, reached 100% participation across the company, improved deliverables rate.
    • Lead architect for many successful projects utilizing modular designs to iteratively develop under tight budget.
    • Responsible for security and compliance including NIST 800-171 to retain government contracts.
    • Met regularly with team members to address job satisfaction and growth opportunities.
    • Evaluated contractors and potential employees to prioritize skill gaps, project needs, as well as team fit.
    • Introduced cloud and monitoring automation to reduce engineering work-load and improve product reliability.
    • Skills used: Python, Elasticsearch, Kibana, GitHub, AWS, Slack, JIRA, Jenkins, Angular

  • Carbonite, Inc.

    Boston, MA
    Principal Engineer/Team Lead
    December 2012 to December 2015

    • Spearheaded the engineering effort to replace all back-end datacenter Microsoft servers with Linux systems saving over a million dollars in license fees and significantly improving service quality.
    • Led a team of six engineers plus a remote team, focused on delivering tested code and personal growth.
    • Integrated static analysis and code test coverage to the deployment pipeline vastly reducing production defects.
    • Designed and implemented security hardening and compliance for core services and hardware.
    • Introduced ‘no-touch’ automated configuration and deployment reducing new server set-up from days to minutes.
    • Skills used: C++, Python, PHP, Perl, Ruby, Jenkins, Cobbler, Rally, SVN, git

  • Senior Engineer
    June 2005 to November 2012

    • Led the effort for government compliance in servers and tools from Mazu which led to large sales.
    • Created a fully automated upgrade process obviating the need to manually work with each customer.
    • Created an XML based UX infrastructure removing the need to custom-code new display elements.
    • Skills used: C, C++, Perl, Java, XML, Apache, PHP, SWIG, HTML, SQL, PostgreSQL, Make, shell, Javascript, SVN

  • GameLogic, Inc.

    Cambridge, MA
    October 2003 to November 2004

    • Integrated and automated regression-testing, build and test deployment into a single entity with attribution significantly speeding up release cycles.
    • Added database replication and monitoring for painless service fail-over reducing on-call after-hour notifications.
    • Led integration of IP-based location services; allowed products to be sold in tightly regulated markets.
    • Skills used: C, C++, Perl, XML, Apache, HTML, SQL, Linux, MySQL, RT, cons, Make, bk, bitkeeper

  • Owner, Consultant
    2001 to 2012

    • Some clients: The Shadow Path, Brain Enhancement Services, Turbine Entertainment, Inc., Alignment Software, Prestige Medical, Stonekeep Consulting, Audible Magic Corp., ReEnforce, LLC, PlanetiBiz, Inc., and Benjamin Realty.
    • Offered web design, database optimization, custom coding, network protocol research and development, device drivers, training, patent development, IT and security for a host of platforms.
    • Skills used: Perl, C, C++, Java, PHP, Ant, Make, CVS, SVN, JNI, Swing, MFC, HTML, Javascript, XML, Apache, CUPS, iptables, MySQL, PostgreSQL, ODBC, SQL, EDI, P2P, HTTP, Drupal, Wordpress, Squid

  • WebUseNet, Inc.

    Boulder, CO
    Senior Architect
    May 2001 to September 2001
  • ipArchive, Inc.

    Westminster, CO
    Senior Architect
    December 2000 to April 2001
  • Quova, Inc.

    Westminster, CO
    Senior Engineer
    April 2000 to December 2000
  • bCandid

    Boulder, CO
    Senior Consulting Engineer
    December 1999 to April 2000
  • Senior Systems Analyst
    August 1999 to December 1999
  • XVT Software, Inc.

    Boulder, CO
    Senior Engineer
    March 1998 to July 1999
  • Engineer
    May 1995 to March 1998


MSEE/CE, Northeastern University, Boston, MA, 2001

BSEE/CS, Rensselaer Polytechnic Institute, Troy, NY, 1994

Professional Organizations

IEEE: Computer Society member since 2000.

ACM: Member since 2001.

ISC2: Member since 2006.

Current Certifications

Certified Information Systems Security Professional (CISSP) since 2006, certificate #88133