Sr. Designer - Traffic

LJAHouston, TX

About The Position

As a Sr. Designer at LJA Transportation, you will be responsible for providing drafting support for traffic engineering projects using CAD software and requires strong technical accuracy, attention to detail, and familiarity with TxDOT standards.

Requirements

  • 10+ years of CAD experience and 0–2 years of MicroStation ORD experience.
  • Strong familiarity with TxDOT and Houston‑area traffic signal design criteria.
  • Experience with Agi32, SignCAD/GuideSIGN, and related tools.

Nice To Haves

  • Effective written and verbal communication skills.
  • Strong interpersonal skills and ability to adapt to shifting project needs.

Responsibilities

  • Developing technical signal design plans that meet TxDOT requirements.
  • Producing CAD deliverables for traffic signals, ITS, illumination, utilities, and related disciplines.
  • Preparing elevation sheets, voltage drop calculations, and quantity summaries.
  • Supporting engineers with design calculations and cost estimates.
  • Collaborating with team members to solve problems and meet client needs.
  • Produce high‑quality CAD drawings for traffic signal design, ITS, illumination, signing, and pavement marking projects.
  • Create and modify maps, plan and profile sheets, and CAD exhibits.
  • Complete redline markups and work from sketches, notes, and verbal instructions.
  • Maintain project schedules and provide progress updates.
  • Stay current with traffic signal design standards and drafting procedures.
  • Support engineers with design calculations, quantity take‑offs, and preparation of summary tables.
  • Review standard construction materials and apply appropriate specifications.
  • Apply general mathematical skills to standard design formulas.

Benefits

  • PTO
  • paid holidays
  • full office closure between Christmas and New Year’s
  • Multiple plan options for health, dental, and pets
  • mental health support
  • Paid maternity and parental leave
  • Tuition reimbursement
  • in-house courses provided by our Learning and Development team
  • Referral Bonuses
  • Company-sponsored volunteer days
  • philanthropic initiatives
  • Memberships to industry organizations
  • Great internal mobility opportunities
  • LJA social events
  • employee sports teams
  • bring your kid to work day
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