HVAC Controls Design Specialist — BAS Documentation

AiRCO Mechanical Ltd.; Round Rock (TX); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Vacation days

Holidays & sick leave

Medical insurance

Life insurance

Disability insurance

AD&D insurance

Additional life insurance

401(k) match

Health Savings Account

Teladoc

Employee Assistance Program

Tuition reimbursement

Job summary

AiRCO Mechanical Ltd. is seeking a Building Automation Systems (BAS) designer to translate scope into compliant BAS designs, develop full submittal packages, and create SOOs for HVAC and electrical systems.

You will perform load calculations and equipment selection, and integrate BACnet, Modbus, and LonWorks. You’ll collaborate with Sales and Project Managers on RFIs, maintain meticulous design documentation, and support budget tracking.

Qualifications

• Must have deep HVAC knowledge across RTUs, AHUs, VAVs, boilers, and chillers.
• Proficiency with AutoCAD and Microsoft Visio (CDT).
• Strong documentation habits and meticulous attention to detail.

Responsibilities

• Translate scope, budget, and contract documents into BAS designs.
• Develop full BAS submittal packages with diagrams and wiring schematics.
• Create and validate SOOs to meet performance requirements.
• Produce Bills of Materials and engineered documents.
• Perform BAS design tasks: load calculations and equipment selection.
• Support Sales during estimation with design input.
• Collaborate on RFIs and resolve plan/spec discrepancies.
• Integrate BACnet, Modbus, and LonWorks protocols.
• Maintain design documentation and configurations.
• Lead large complex projects with standard tools and smart deviations.
• Forecast design labor and track against budgets.

Skills

HVAC knowledge

Documentation habits

Cost-effective solutions

Standards & libraries

Design & support engineering

Tools

AutoCAD

Microsoft Visio (CDT)

Tridium/Niagara

EIKON

Controller Configuration Tool

Job description

Shape smarter buildings with precise BAS design and submittals

Why you’ll love working here

• Professional, technical, and financial growth in a thriving Building Automation group.
• Impact across commercial projects where quality documentation drives installation success.
• Access to modern tools and a collaborative team that values initiative.

What you’ll do

• Translate scope, budget, and contract documents into compliant Building Automation Controls designs.
• Develop full BAS submittal packages: detailed riser diagrams, network architecture, and physical point‑to‑point wiring schematics for HVAC and electrical systems.
• Create and validate Sequences of Operations (SOO) to ensure performance requirements are met.
• Produce accurate Bills of Material and polished engineered documents using AutoCAD and Microsoft Visio (CDT).
• Perform BAS system design: load calculations, equipment selection, and control system integration.
• Support the Sales team during estimation and bid phases with design input.
• Collaborate with Project Managers to craft RFIs; identify and resolve plan/spec discrepancies.
• Integrate protocols expertly: BACnet MSTP/IP, Modbus TCP/RTU, and LonWorks.
• Maintain meticulous documentation for design systems, wiring diagrams, and software configurations.
• Independently execute large, complex projects using standard tools and practices with smart deviations where appropriate.
• Forecast required design labor and track against budget and forecast goals.
• Coordinate with external customers and vendors to ensure accuracy and timeliness.
• Assist with project timeline, budget, and cross‑team coordination.
• Recommend products that add functionality and value; support service engineering for existing buildings.
• When assigned, develop and maintain engineering standards libraries for both Bosch Building Technologies and the industry.
• Other duties as assigned.

Must‑have capabilities

• Deep HVAC knowledge: RTUs, FCUs, VAV boxes; AHUs, DOAS, MUA; hydronic systems with valve sizing; chiller plants (air‑cooled/water‑cooled), cooling towers; boiler plants with heat exchangers.
• Proficiency in AutoCAD and Microsoft Visio (CDT).
• Strong documentation habits and attention to detail.

Preferred qualifications

• 2+ years programming experience with Tridium/Niagara, Spyder tool, EIKON, EC‑gfxProgram, and/or Controller Configuration Tool.
• Track record proposing cost‑effective technical solutions.
• Experience maintaining internal standards, libraries, or best practices for design/engineering.
• Background in both design and support/service engineering for installed building systems.

Benefits and support

• Two weeks paid vacation in year one
• Paid holidays and sick leave
• Excellent health, vision, and dental insurance with low employee cost
• Life insurance (2× salary paid by company)
• Short‑term and long‑term disability insurance (company‑paid)
• Accidental death and dismemberment insurance
• Optional additional life insurance
• 401(k) with company match
• Health Savings Accounts
• Teladoc
• Employee Assistance Program
• Tuition reimbursement

How we work

• Operate with minimal supervision and high ownership.
• Communicate proactively through RFIs and coordination with PMs, vendors, and customers.
• Balance precision with progress—hit schedule and budget targets without compromising quality.