ESI · 11 hours ago
ESI Senior Process Engineer
Denver, CO
Full-time
Onsite
Senior Level, Lead/Staff
10+ years expENERGYneering Solutions (ESI) is a division of TransTech Energy that specializes in engineering and operations for the biogas utilization and management industries. The Senior Process Engineer plays a critical role in advancing biogas projects, providing technical expertise and collaborating with multidisciplinary teams to optimize processes and enhance system reliability.
Financial Services
Responsibilities
Serve as a senior technical expert in process engineering, providing high‑level support for project development and execution across engineering services and EPC projects in the company’s various end markets
Drive effective communication and collaboration across engineering disciplines by proactively coordinating design interfaces, sharing technical insights, and ensuring alignment on process requirements throughout the project lifecycle
Identify gaps in process design approaches, tools, and resources, and recommend improvements to department leadership to enhance efficiency, technical rigor, and project execution quality
Provide mentorship and technical guidance to junior and mid‑level engineers, supporting their development through knowledge sharing, design reviews, and constructive feedback
Prepare complex engineering drawings and documentation for permitting, estimating, bidding, and construction, ensuring accuracy, clarity, and compliance with project and regulatory requirements
Lead the development and review of key process engineering deliverables, including Project Design Basis documents, Block Flow Diagrams (BFDs), Process Flow Diagrams (PFDs), equipment specifications, data sheets, and Piping and Instrumentation Diagrams (P&IDs). Develop control philosophies and cause‑and‑effect charts for advanced process systems
Participate as a senior technical contributor in project HAZOP and other process safety reviews, offering expert insight into process hazards, operability concerns, and mitigation strategies
Perform and validate advanced engineering calculations, including material and energy balances; valve, tank, and vessel sizing; heat exchanger, pump, and compressor sizing; and piping, control, and relief valve sizing
Support the review and resolution of contractor RFIs, providing clear, technically sound responses that maintain design intent and project requirements
Collaborate closely with ESI’s Operations Division to troubleshoot process issues, optimize system performance, and implement improvements based on operational data and field observations
Work cross‑functionally with other engineering disciplines and departments, ensuring integrated, high‑quality design solutions and consistent technical standards across projects
Apply knowledge of ASME piping and pressure vessel codes, API, ASTM, and other relevant industry standards to ensure compliance and technical excellence in all process designs
Use advanced thermodynamic, chemical, and physical analysis to develop and refine process systems and unit operations in accordance with contractual obligations, codes, and standards. Prepare detailed specifications and technical reports
Perform other related duties as required to support project and organizational needs
Qualification
Required
10+ years of engineering experience
Bachelor's degree in Chemical or Petroleum Engineering from an accredited university
Proficiency with chemical process simulation software. (Aspen, BR&E Promax or others)
Valid driver's license for state of residence
Proficient with the Microsoft Office suite of software. (Word, Excel, PowerPoint, etc.)
Preferred
Experience in some of or all the following industries: Renewable Energy; Gas Processing; Chemical; Power; Waste Management; Environmental Air Quality Control Systems
PE or FE certification or ability to obtain certification
Proficiency in Smartsheet or other project management software
Company
ESI
ESI offers EPC and O&M solutions for biogas, RNG, and power generation, with a focus on improving chromatography and nanospray devices.
51-200 employees
H1B Sponsorship
ESI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)
2021 (1)
Funding
Current Stage
Growth StageLeadership Team
Benny Benson
President
Recent News
Dallas Innovates
2026-01-07
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