A fast-growing,
AI start-up
is seeking a
Senior Backend Software Engineer
to join its highly collaborative, cross-functional team. This is a unique opportunity to build impactful systems from the ground up in an engineering-first environment where technology drives every decision. You’ll play a key role in shaping scalable infrastructure and delivering best-in-class experiences for end users.
This role is perfect for someone who enjoys autonomy, thrives on solving complex technical challenges, and wants to see their work make a real difference — quickly.
*******Please note that Sponsorship is not possible for this opportunity, you must have a valid work permit/residence permit to work in Canada*******
What You’ll Be Doing
Architect, develop, and maintain scalable services, data models, and APIs that power core platform functionality
Take full ownership of feature lifecycles — from technical design to deployment and ongoing maintenance
Work closely with product, data, and design teams to deliver seamless, user-friendly experiences
Build internal tools and infrastructure that improve team productivity and platform reliability
Promote and implement engineering best practices, focusing on scalability, performance, and maintainability
Contribute to the long-term technical roadmap and system architecture decisions
We are seeking a highly skilled
Senior Backend Software Engineer
to join a fast-paced AI start-up with an excellent team. In this role, you will design, build, and maintain the server-side systems and APIs that power our applications. You will work closely with product managers, frontend engineers, and DevOps to deliver scalable, secure, and high-performance solutions for enterprise customers
Key Responsibilities
Design, develop, and maintain backend services, APIs, and databases
Write clean, efficient, and well-documented code
Optimize application performance, scalability, and reliability
Collaborate with frontend and product teams to integrate features and deliver end-to-end functionality
Implement best practices in security, data privacy, and compliance
Participate in code reviews, architecture discussions, and technical planning
Monitor, debug, and troubleshoot production systems
Contribute to continuous improvement of development processes and tools
Requirements
8+ years of experience
as a
Senior Backend Engineer
or in a similar role
Strong proficiency in at least one backend programming language (e.g.,
Java, Python, Go, Node.js, C
#)
Experience with frameworks such as
Spring Boot, Express, Django, or FastAP
I
Solid understanding of
RESTful APIs, GraphQL, or gRP
C
Hands-on experience with
database
s (SQL and NoSQL)
Familiarity with
containerization and orchestratio
n (Docker, Kubernetes)
Knowledge of
cloud platforms
(AWS, GCP, or Azure)
Experience working with infrastructure
Strong understanding of
system design, distributed systems, and microservices architectur
e
Experience working with infrastructure engineers
Working knowledge of
CI/CD pipelines, Git, and automated testin
g
Excellent problem-solving skills and attention to detail
Strong communication skills and ability to work collaboratively in a cross-functional team
Nice to Have
Experience with
event-driven architecture
s (Kafka, RabbitMQ, etc.)
Knowledge of
DevOps practices and infrastructure as cod
e (Terraform, Ansible, etc.)
Familiarity with
observability tool
s (Prometheus, Grafana, ELK stack)
Prior experience in a
fast-paced startup or agile environmen
t
What We Offer
Competitive salary and benefits package
Opportunity to work on impactful, large-scale projects with enterprise customers and on very tangible applications of AI
Flexible working arrangements (remote/hybrid options). 1 day a week in the co-working space if you are within the Greater Toronto Area
Professional growth and learning opportunities
Inclusive and collaborative team culture