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Added 2 months ago
CO
Staff Software Engineer - Capital One Travel Tech - Full-stack
Capital One
Toronto, ON
- Full-time
Act as a tech lead developer owning technical design and development of cross-functional, multi-platform, fault tolerant application systems
Added 2 months ago
A
Senior DevOps Engineer
Aptiv
Ottawa, ON
- Full-time
We are looking for a Senior DevOps Engineer who can help strengthen the reliability, automation, build, release, and developer experience of our cloud platform products. This role is not…
Added 4 months ago
Network Engineer, Foundation & Support
Meta
Quinte West, Ontario
Lead incident response for network outages, performing root cause analysis, coordinating remediation efforts, and implementing corrective actions to prevent recurrence
Added 4 months ago
A
Cloud Platform - Senior Engineer Storage
Aptiv
Kanata, Ontario
- Full-time
…Maturity, impeccable judgment, and the ability to influence and lead are essential to success in this…
Added 4 months ago
D
Senior Software Engineer, Integrations
d1g1t
Toronto, Ontario
- Full-time
Architecting Data Solutions: Lead the design and development of robust, scalable ETL processes using Python and Airflow to power our core platform.
Added 2 months ago
GM
Senior Software Developer – AI‑Enablement
General Motors
Remote, Canada
- Full-time
- Remote
As a Senior Software Developer, you will build the software that powers GM’s virtual development environments, SIL workflows, and AI‑enhanced simulation capabilities. You bring strengths in…
Added 2 months ago
GM
Senior Software Developer – DevOps
General Motors
Remote, Canada
- Full-time
- Remote
As a Senior DevOps Developer in GM’s Virtualization and Software‑in‑the‑Loop (SIL) Integration group, you will build automation, pipelines, and cloud‑native systems that accelerate…
Added 2 months ago
Lead, Manufacturing Engineer
Rocket Lab Corporation
Toronto, Ontario
Analyze and resolve manufacturing discrepancies and non-conformances. Where necessary, lead root cause analyses and implement corrective actions.
Added 4 months ago
A
Manager, Applications Engineering
Avidbots
Kitchener, Ontario
- Full-time
Avidbots is seeking a passionate, self-driven Manager, Applications Engineering to lead our Applications Engineering team. The ideal candidate is an experienced engineering leader with a…
Added 4 months ago
XE
Director of Optical Engineering
Xcimer Energy
Quinte West, Ontario
- Full-time
As a Director of Optical Engineering you will lead the department which staffs the design, development, qualification and commissioning of state-of-the-art UV laser optical systems for…
Added 3 months ago
MC
Senior Generative AI Engineer
MCI Careers
Canada
- Other
We are seeking a Senior Generative AI Engineer to lead the development of advanced AI-powered products and enterprise solutions. This role requires deep expertise in Large Language Models,…
Added 3 months ago
MC
Senior RAG Engineer
MCI Careers
Canada
- Other
We are seeking a Senior RAG Engineer to lead the design and optimization of Retrieval-Augmented Generation platforms that power enterprise AI solutions. This role requires expertise in…
Added 3 months ago
MC
Senior AI Agent Developer
MCI Careers
Canada
- Other
We are seeking a Senior AI Agent Developer to lead the design, development, and deployment of enterprise-scale AI agent ecosystems. This role focuses on creating sophisticated AI agents…
Added 3 months ago
MC
Senior AI / ML Engineer
MCI Careers
Canada
- Other
We are seeking a highly experienced Senior AI / Machine Learning Engineer to lead the design, development, and deployment of advanced AI and machine learning solutions that drive innovation…
Added 4 months ago
Network Engineer, Optical Deployment
Meta
Quinte West, Ontario
Meta is looking for an Optical Network Deployment & Support Engineering Lead to join the team responsible for planning and executing network deployments to build the world's largest AI…
Added 4 months ago
Network Engineer, Optical Deployment
Meta
Quinte West, Ontario
Lead the technical deployment, architecture, and execution for your team’s projects within Edge Network Services (ENS) on network deployment, ensuring alignment with organizational…
Added 4 months ago
MT
Ingénieur principal du personnel technique – Conception analogique/ Senior Technical Staff Engineer - Analog Design
Microchip Technology Inc.
Montreal, Quebec · Canada - Montreal
- Full-time
Lead transistor-level design and advanced simulations across process corners and operating conditions
Added 4 months ago
EN
Distinguished SW Systems Engineer (10343)
Extreme Networks
Toronto, ON
- Full-time
Title of position: Innovation Lead - Office of the CTO | WiFi
Added 2 months ago
Modern Endpoint Management Engineer
Scotiabank
Toronto, ON
We are seeking an experienced Senior Engineer Third-Party Application Patch Management to Lead an enterprise-scale third-party application patch management across complex endpoint…
Added 4 months ago
ME
Senior Groundwater Modeller
Montrose Environmental Group
Oakville, Ontario · CAN-ON-Oakville-Upper Middle Rd
- Full-time
Lead discussions with clients and prepare scopes of work including pricing and staffing.
Added 4 months ago
IL
Advanced Engineer, Product Engagement
Invesco Ltd.
Charlottetown, Prince Edward Island
- Full-time
The primary role of this position will be to lead the Invesco technology team’s effort use innovative technologies to enable product and client reporting. The vision is to utilize…
Added 5 months ago
M
Principal Software Engineer - Distributed Systems
Microsoft
Vancouver, British Columbia
- Full-time
Collaborates with appropriate stakeholders (e.g., project manager, technical lead) to align on user requirements for a scenario. Leverages a variety of feedback channels to incorporate…
Added 4 months ago
S
Technical Support Engineer
Sentry
Remote, Canada
- $100,000 to $125,000 CAD / year
- Full-time
- Remote
…Discord, and our internal systems, while acting as the Technical Lead for our Agentic Ops. You ensure that when a developer asks a complex question, our systems have the right context and a…
Added 2 months ago
Sr. HPC & IT Systems Engineer (7723)
TSMC
Ottawa, ON
Project Management & Collaboration: Lead IT projects for internal/external users, act as the primary IT liaison, and collaborate with global IT teams.
Added 4 months ago
C
Apps Development Sr Manager - Vice President
Citi
Mississauga, Ontario
- Full-time
Collaborate with development teams to create a seamless developer experience and ensure applications are built with scalability, reliability, and security in mind.

MCI Careers

Senior RAG Engineer

Canada

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Job details

Apply by: Jun 29, 2027
Experience: Minimum 5 years of software engineering experience.
Posting language: English
Posted: Oct 2, 2026

Original job description

POSITION OVERVIEW

MCI is one of the fastest-growing tech-enabled business services companies in the US, delivering Customer Experience (CX), Business Process Outsourcing (BPO) and technology solutions across multiple industries and countries worldwide. Our team uses people, technology and innovation to help organizations improve customer experience and business performance.

We are seeking a Senior RAG Engineer to lead the design and optimization of Retrieval-Augmented Generation platforms that power enterprise AI solutions. This role requires expertise in semantic search, vector databases, information retrieval, and Generative AI technologies.

You will provide technical leadership while ensuring knowledge retrieval systems are accurate, scalable, secure, and aligned with business needs.

To be considered for this role, you must complete a full application on our company careers page, including all screening questions and a brief pre-employment test.

POSITION RESPONSIBILITIES

Key Responsibilities:

Retrieval Architecture & Platform Design

Lead the development of enterprise-grade retrieval and knowledge systems.
Design scalable Retrieval-Augmented Generation architectures.
Develop enterprise knowledge ingestion and indexing frameworks.
Establish retrieval standards and best practices.
Architect solutions that support AI-powered knowledge access.

Search Optimization & Knowledge Management

Drive improvements in retrieval quality and performance.
Optimize vector search and semantic retrieval capabilities.
Improve relevance, accuracy, and response quality.
Design evaluation methodologies and testing frameworks.
Support knowledge lifecycle management processes.

Enterprise Integration & Delivery

Enable seamless integration of retrieval systems with AI applications.
Collaborate with AI engineers and product teams.
Integrate retrieval systems with LLMs and AI workflows.
Support enterprise-wide AI initiatives and deployments.
Develop scalable APIs and retrieval services.

Governance, Security & Compliance

Maintain operational excellence and regulatory compliance.
Implement security controls and data governance standards.
Monitor platform performance and availability.
Conduct root cause analysis and issue resolution activities.
Maintain technical documentation and operational procedures.

Leadership & Innovation

Provide technical leadership and support organizational AI growth.
Mentor engineers and technical teams.
Evaluate emerging retrieval technologies and frameworks.
Recommend enhancements to platform architecture.
Contribute to AI strategy and innovation initiatives.

CANDIDATE QUALIFICATIONS

WONDER IF YOU ARE A GOOD FIT FOR THIS POSITION?

All positive, and driven applicants are encouraged to apply. The Ideal candidates for this position are highly motivated and dedicated and should possess the below qualities:

Bachelor's Degree in Computer Science, Information Systems, Data Science, Artificial Intelligence, Software Engineering, or related field.
Minimum 5 years of software engineering experience.
Experience designing and implementing enterprise-scale Retrieval-Augmented Generation solutions.
Strong proficiency in Python and backend development.
Extensive knowledge of embeddings, semantic search, vector databases, and information retrieval techniques.
Experience building scalable retrieval, indexing, and knowledge management systems.
Experience integrating RAG architectures with Large Language Models.
Knowledge of cloud infrastructure and distributed computing environments.
Experience leading technical projects and mentoring engineering teams.
Strong troubleshooting and performance optimization skills.
Excellent communication and stakeholder management capabilities.
Experience working within complex enterprise technology environments.

Nice to Have

Experience with Pinecone, Weaviate, Chroma, Milvus, or equivalent platforms.
Experience with LangChain, LlamaIndex, Haystack, or related frameworks.
Knowledge of enterprise search and knowledge management solutions.
Experience with MLOps and AI deployment pipelines.
Cloud certifications in AWS, Azure, or GCP.
Knowledge of AI governance, security, and compliance frameworks.
Master's Degree in Computer Science, Artificial Intelligence, or related discipline.
Experience supporting enterprise AI transformation programs.

PHYSICAL REQUIREMENTS

This job operates in a professional office environment. While performing the duties of this job, the employee will be largely sedentary and will be required to sit/stand for long periods while using a computer and telephone headset. The employee will be regularly required to operate a computer and other office equipment, including a phone, copier, and printer. The employee may occasionally be required to move about the office to accomplish tasks; reach in any direction; raise or lower objects, move objects from place to place, hold onto objects, and move or exert force up to forty (40) pounds.

CONDITIONS OF EMPLOYMENT

All MCI Locations

Must be authorized to work in the country where the job is based.

Subject to the program and location of the position

Must be willing to submit up to a LEVEL II background and/or security investigation with a fingerprint. Job offers are contingent on background/security investigation results.
Must be willing to submit to drug screening. Job offers are contingent on drug screening results. (Does not apply in Canada)

REASONABLE ACCOMMODATION

Consistent with the Americans with Disabilities Act (ADA), it is the policy of MCI and its affiliates to provide reasonable accommodations when requested by a qualified applicant or employee with a disability unless such accommodations would cause undue hardship. The policy regarding requests for reasonable accommodation applies to all aspects of employment. If reasonable accommodations are needed, please contact Human Resources.

EQUAL OPPORTUNITY EMPLOYER

At MCI and its subsidiaries, we embrace differences and believe diversity is a benefit to our employees, our company, our customers, and our community. All aspects of employment at MCI are based solely on a person's merit and qualifications. MCI maintains a work environment free from discrimination, one where employees are treated with dignity and respect. All employees share in the responsibility for fulfilling MCI's commitment to a diverse and equal opportunity work environment.

MCI does not discriminate against any employee or applicant on the basis of age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations, and ordinances. MCI will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements.

MCI will not tolerate discrimination or harassment based on any of these characteristics. We adhere to these principles in all aspects of employment, including recruitment, hiring, training, compensation, promotion, benefits, social and recreational programs, and discipline. In addition, it is the policy of MCI to provide reasonable accommodation to qualified employees who have protected disabilities to the extent required by applicable laws, regulations, and ordinances where an employee works.

ABOUT MCI (PARENT COMPANY)

MCI helps customers take on their CX and DX challenges differently, creating industry-leading solutions that deliver exceptional experiences and drive optimal performance. MCI assists companies with business process outsourcing, staff augmentation, contact center customer services, and IT Services needs by providing general and specialized hosting, software, staff, and services.

In 2019, Marlowe Companies Inc. (MCI) was named by Inc. Magazine as Iowa’s Fastest Growing Company in the State of Iowa and was named the 452nd Fastest Growing Privately Company in the USA, making the coveted top 500 for the first time. MCI’s subsidiaries had previously made Inc. Magazine's List of Fastest-Growing Companies 15 times, respectively. MCI has ten business process outsourcing service delivery facilities in Georgia, Florida, Texas, New Mexico, California, Kansas, Nova Scotia, South Africa, and the Philippines.

Driving modernization through digitalization, MCI ensures clients do more for less. MCI is the holding company for a diverse lineup of tech-enabled business services operating companies. MCI organically grows, acquires, and operates companies that have synergistic products and services portfolios, including but not limited to Automated Contact Center Solutions (ACCS), customer contact management, IT Services (IT Schedule 70), and Temporary and Administrative Professional Staffing (TAPS Schedule 736), Business Process Management (BPM), Business Process Outsourcing (BPO), Claims Processing, Collections, Customer Experience Provider (CXP), Customer Service, Digital Experience Provider (DXP), Account Receivables Management (ARM), Application Software Development, Managed Services, and Technology Services, to mid-market, Federal & enterprise partners. MCI now employs 10,000+ talented individuals with 150+ diverse North American client partners across the following MCI brands: MCI BPO, MCI BPOaaS, MarketForce, GravisApps, Gravis Marketing, MarchEast, Mass Markets, MCI Federal Services (MFS), OnBrand24, The Sydney Call Center, Valor Intelligent Processing (VIP), BYC Aqua, EastWest BPO, TeleTechnology, and Vinculum.

................

The purpose of the above job description is to provide potential candidates with a general overview of the role. It's not an all-inclusive list of the duties, responsibilities, skills, and qualifications required for the job. You may be asked by your supervisors or managers to perform other duties. You will be evaluated in part based upon your performance of the tasks listed in this job description.

The employer has the right to revise this job description at any time. This job description is not a contract for employment, and either you or the employer may terminate employment at any time, for any reason.

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More about this job

Responsibilities

Design and maintain RAG systems and knowledge repositories to provide accurate, context-aware AI responses. Develop document ingestion pipelines and optimize vector search performance to enhance AI reliability and business impact.

Requirements

Requires a Bachelor's degree in Computer Science or a related field with at least 3 years of experience in software or AI engineering. Proficiency in Python and experience with LLMs, embeddings, and vectorization techniques are essential.

Skills

Python
Retrieval-Augmented Generation (RAG)
Large Language Models (LLMs)
Vector Databases
Semantic Search
API Development
Cloud Platforms
Data Ingestion
Machine Learning
Information Retrieval
Microservices
Prompt Engineering

Visa sponsorship

Not detected in the job text

Keywords

RAG
LLM
Generative AI
Python
Vector Search
Pinecone
Weaviate
Milvus
Chroma
LangChain
LlamaIndex
Haystack
AWS
Azure
Google Cloud Platform
MLOps
Docker
Kubernetes
Semantic Search
Embeddings
Microservices
API
Information Retrieval
Knowledge Management
Agile
BPO
CX
XaaS

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