Senior Structural Geotechnical Tunnel Engineer

Job Descriptions: Senior Engineer & Principal Engineer

Tunnel & Underground Structural Engineering — updated to reflect NOMA's core values (Integrity, Accountability, Authenticity, Nimbleness, Impeccable) and AI-collaboration standards

Senior Structural Geotechnical Tunnel Engineer

Position: Senior Engineer

Role Purpose

Deliver technically excellent structural design for tunnel and underground infrastructure projects, leading a small team of junior engineers and modellers, and acting as NOMA's day-to-day technical point of contact with clients, contractors, and government authorities.

Core Responsibilities

•    Lead design of permanent concrete tunnel linings.

•    Lead design of strutting and waling systems for earth retaining structures.

•    Lead design of TBM launch frames and cradles.

•    Provide analysis for bored tunnel linings, including construction sequence, impact assessment, and instrumentation monitoring.

•    Lead and mentor a team of Junior Engineers and modellers, reviewing their outputs before it is issued.

•    Liaise directly with clients, contractors, and government authorities on technical and design matters.

•    Direct the preparation of technical sketches and design packages issued to modellers.

•    Ensure all designs comply with applicable codes, standards, and NOMA's internal quality requirements.

Requirements

•    Recognised degree in Civil Engineering.

•    At least 8 years of experience in structural engineering, with a strong tunnel/underground portfolio.

•    Demonstrated ability to lead design teams and manage client-facing technical relationships.

NOMA Core Values in This Role

Value

In this role

Integrity

Personally verifies every design output before it carries their name or NOMA's.

Accountability

Owns outcomes end-to-end; does not defer responsibility to tools, juniors, or circumstance.

Authenticity

Communicates directly and honestly with clients, contractors, and authorities – no overpromising.

Nimbleness

Adapts designs and approach quickly to site conditions, client feedback, and cross-office ways of working.

Impeccable

Holds technical documentation, sketches, and presentation to the highest standard, every time.

Principal Structural/Geotechnical Tunnel Engineer

Position: Principal Engineer

Role Purpose

Act as NOMA's senior technical authority for tunnel and underground structural engineering across multiple projects and offices. Set design direction, hold independent assurance and sign-off authority, mentor Senior and Junior Engineers, and contribute to strategic client relationships and business development.

Core Responsibilities

•    Carryout all responsibilities of a Senior Engineer, exercised at a portfolio level across projects and offices.

•    Hold independent technical assurance and sign-off authority for tunnel lining, retaining structure, and TBM launch designs across NOMA's Singapore office.

•    Own strategic client relationships; represent NOMA in high-level technical negotiations, variation claims, and dispute resolution.

•    Mentor and develop Senior and Junior Engineers, contributing technical input to their performance appraisals and KPI reviews.

•    Champion the adoption of new design methodologies, while holding the team accountable for personally checking and verifying outputs.

•    Contribute to business development, including technical proposals, capability presentations, and client pursuit strategy.

•    Represent NOMA in industry forums, standards committees, or technical panels as required.

Requirements

•    Recognised degree in Civil Engineering or related discipline; Chartered/professional engineer status preferred.

•    At least 12 years of experience in tunnel/underground structural engineering, with a demonstrated track record of technical leadership.

•    Proven experience mentoring senior technical staff and managing delivery across multiple projects or offices.

•    Strong track record in client relationship management and business development.

NOMA Core Values in This Role

Value

In this role

Integrity

Personally verifies every design output before it carries their name or NOMA's.

Accountability

Owns outcomes end-to-end; does not defer responsibility to tools, juniors, or circumstance.

Authenticity

Communicates directly and honestly with clients, contractors, and authorities – no overpromising.

Nimbleness

Adapts designs and approach quickly to site conditions, client feedback, and cross-office ways of working.

Impeccable

Holds technical documentation, sketches, and presentation to the highest standard, every time.