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HIKINEX

(Fastwater Staffing) Guidance, Navigation & Control (GNC) Systems Engineer - Montreal, Canada [Full Relocation Package]

QC, Canada

Job type: Contract
Posting language: English
Posted: Sep 21, 2026

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Original job description

Role overview:

We are seeking a GNC System Engineer for design, integration, verification, and operational support of GNC subsystems for our current and next-generation remote sensing and communications satellites. The role will require to design the complete subsystem, from algorithm development through hardware implementation, verification, and on‑orbit operation support. The role requires deep expertise in orbital dynamics, attitude‑determination & control, plus real‑time FSW definition and integration, and will work closely with subsystem and mission operations teams throughout the satellite life-cycle.

Tasks summary:

Architecture Concept & Requirements

Derive GNC functional, performance, and safety requirements (pointing accuracy, slew rate, orbit‑maintenance ΔV, fault‑tolerance) from mission level requirements.

Produce System Requirements, Interface Control document (ICD), and Description Document.

Perform requirement management and maintain bidirectional traceability throughout the project lifecycle.

Modelling & Trade‑Study

Conduct trade studies on sensor suites and actuator families.

Perform high‑fidelity dynamics simulations (Matlab/Simulink, STK) to meet pointing requirements, maintain error budgets, control‑law stability, fuel consumption, and survivability margins.

Algorithm Development

Design and implement attitude‑determination algorithms and orbit‑determination solutions.

Develop control laws for 3‑axis stabilization, slew maneuvers, station keeping algorithms

Validate algorithms with Monte‑Carlo analysis, worst‑case scenarios, and support SIL/HIL testing on avionic test bench.

Cross‑Functional Coordination, Stakeholder & Program Interaction

Translate algorithms into FSW requirements running on real‑time operating systems.

Collaborate with the C&DH and FSW teams to implement TM/TC, schedulers and FDIR logic for GNC.

Present technical status, risk analyses, and trade‑study results to senior management.

Negotiate and maintain ICDs with subsystems.

Support B&P (Phase 0 & pre-phase A).

Hardware Selection & Design

Specify sensor and actuator hardware, perform interface definition (electrical, mechanical, thermal) and conduct trade on redundancy architectures.

Work with structures and thermal engineers to ensure proper mounting, thermal paths, and vibration survivability of GNC hardware aligning with payload requirements.

Review harness routing and power distribution for GNC electronics.

Integration & Verification (IVV)

Author Verification Plans, Test Matrices, and Validation Procedures for unit, subsystem, and spacecraft level GNC tests.

Lead functional tests: sensor calibration, actuator command‑response, closed‑loop attitude‑control on testbeds, and on‑orbit checkout sequences.

Conduct failure mode and effects analysis (FMEA), fault tree analysis (FTA), and reliability prediction.

Technical Leadership & Mentorship

Mentor, guide junior engineers and interns.

Act as technical liaison with customers, partners and external vendors

Act as Continuous Improvement stakeholder

Contribute to Client’s knowledge‑base, process enhancements, and standards.

Configuration, Documentation & Standards Management

Maintain GNC standards (sensor/actuator interface, filter design, control‑law documentation).

Ensure all artefacts, analysis, software, deliverables and documentations are version controlled in PLM environment.

Support design reviews (SRR, PDR, CDR, MRR/TRR…etc.).

Support Technology Road‑Mapping & Innovation

On‑Orbit & Operations Support

Support procedure developments (detumble, orbit‑maintenance, safe‑mode…etc.).

Provide real‑time GNC support during launch, early‑orbit checkout, and contingency events.

Analyse on‑orbit telemetry, update filter parameters, and generate performance reports.

Support SOOH development and associated operator training.

Required Qualifications:

B.Sc. in Electrical Engineering, Aerospace or Physics, (M.Sc. preferred), focused on flight dynamics, control theory, or navigation with 10+ of GNC/AOCS experience on LEO/MEO/GEO platforms.

Orbital mechanics, attitude dynamics, and control-law design (classical and modern optimal control).

Proficiency with navigation sensors and actuators.

Experience implementing real-time filtering and control algorithms in embedded code

Strong understanding of aerospace system engineering fundamentals.

Hands-on individual who can support systems integration processes and capability to test systems and resolve problems.

Experience with Confluence and JIRA.

Demonstrated capability to efficiently work with little supervision.

Ability to distill complex problems to fundamentals to solve with analysis, similarity, or creativity.

Demonstrate excellent written and verbal communications skills in English & French work environment.

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More about this job

Responsibilities

The GNC Systems Engineer will design, integrate, and verify GNC subsystems for remote sensing and communications satellites throughout the entire lifecycle. This includes developing algorithms, performing high-fidelity dynamics simulations, and providing on-orbit operational support.

Requirements

Candidates must hold a B.Sc. in Electrical Engineering, Aerospace, or Physics with over 10 years of experience in GNC/AOCS on LEO/MEO/GEO platforms. Proficiency in orbital mechanics, control-law design, and real-time embedded software implementation is required.

Skills

GNC systems engineering
Orbital dynamics
Attitude determination
Control-law design
Matlab
Simulink
STK
Real-time filtering
Embedded code
Systems integration
FDIR logic
Requirements management
Aerospace engineering
Telemetry analysis
Failure mode and effects analysis
Technical leadership

Benefits

Full relocation package

Visa sponsorship

Not detected in the job text

Keywords

GNC
AOCS
Satellite
Orbital mechanics
Matlab
Simulink
STK
FSW
C&DH
TM/TC
FDIR
Monte-Carlo analysis
SIL/HIL testing
Avionic test bench
FMEA
FTA
PLM
SRR
PDR
CDR
Confluence
JIRA
LEO
MEO
GEO
Systems engineering
Control theory
Navigation
Telemetry
SOOH

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