Posted 3 months ago
Senior / Staff Backend Engineer – Core Platform
@ Calliere
Toronto, Ontario
Overview
Calliere is hiring a senior-level backend engineer for its Toronto hub at a B2B infrastructure startup building a high-volume data ingestion and API platform. The role is full-time, predominantly on-site in downtown Toronto (4 days a week in office), and involves architecting distributed systems and APIs on AWS plus direct client technical consulting.
Responsibilities:
- Design and deploy scalable backend services and public APIs on AWS
- Build fault-tolerant pipelines ingesting data from third-party vendors
- Develop platform components: orchestration, authentication, monitoring
- Advise enterprise clients on integration strategies
- Champion engineering standards and developer tooling
Requirements summary:
- Extensive experience with distributed systems and APIs at scale
- Deep production expertise in TypeScript and Node.js
- Track record integrating complex external APIs into clean pipelines
- Comfort acting as technical authority for enterprise customers
- Ability to scope complex projects independently
Tools & skills
Benefits mentioned
Source and dates
Source type not verified · zoho
- Employer posting date
- 2026-08-18
- First seen by our source
- 2026-10-09
- Source record updated
- 2026-10-10
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | Software development |
| Hours per week | 40 (estimated) |
| Travel | air: none · ground: none |
| Work setting | Office |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English |
| Perks mentioned | Generous paid time off, Wellness, Home office allowance |
Summary and details written by AI from the posting; the employer’s posting is the authority.
Calliere
Saved company profile
Historical company information from a saved The Jobs API profile (LinkedIn/Crunchbase fields). It is not live-verified; figures may have changed. Missing values remain unknown.
Full company description
The Callière Group is a boutique organization that provides tailored executive search, talent acquisition, and advisory services to meet the unique challenges our clients face. We pride ourselves on a collaborative approach. We partner with our clients to solve their most challenging talent acquisition and management needs. The Callière Group has a dependable foundation of recruiting Management Consulting, IT professionals and Management Executives from across industries with particular expertise helping organizations within the Professional Services; Financial Services; Retail and, Technology sectors. Our outcome based approach is built on ensuring alignment of stakeholder needs. Our job is to provide our clients with the right candidates for their strategic talent requirements as well as to provide top tier advisory services. The Callière Group approach is one that is built to minimize organizational disruption; collaboratively defines and articulates an organization’s specific talent needs; and, best positions organizations and candidates for success. The commitment to delivering results that organizations, employers and candidates demand and deserve is best achieved with Callière Group consultants. Consultants who have gained wisdom and foresight that can only come from direct Professional Services experience at all levels, ongoing training, and have significantly accrued time-tested experience in both successful and even unsuccessful project execution.
- LinkedIn followers
- 2,806
- People associated on LinkedIn
- 3
- Reported office locations
- 54, rue Le Royer Ouest, Montreal, Quebec H2Y 1W7, CA
- 500 King Street West, Toronto, Ontario M5V 1L9, CA
- 8 Faneuil Hall Marketplace, Boston, Massachusetts 02109, US
- Other recorded names
- Calliere
- Calliere Group
- Specialties
- Recruiting
- Technical Recruiting
- Consulting
- Headhunting
- Executive
- Infrastructure
- Development
- Automated Testing
- Mobile
- Security
- Big Data
- Artificial Intelligence
- Machine Learning
- DevOps
- Architecture
- Bioengineering
- Bioinformatics
- Digital Health
- Computational Biology
- Biostatistics
- LLM
- NLP
- Cryptography
- Fintech
- Ultra Low Latency Development
- Web3
- and Blockchain
- Profile identifies a recruitment agency
- Yes
The Callière Group is a boutique organization that provides tailored executive search, talent acquisition, and advisory services to meet the unique challenges our clients face. We pride ourselves on a collaborative approach. We partner with our clients to solve their most challenging talent acquisition and management needs. The Callière Group has a dependable foundation of recruiting Management Consulting, IT…
| Field | Value |
|---|---|
| Industry | Information Technology & Services |
| Company size | 2-10 employees |
| Headquarters | Montreal, Quebec |
| Organization type | Privately Held |
| Year founded | 2008 |
| Specialties | RecruitingTechnical RecruitingConsultingHeadhuntingExecutiveInfrastructureDevelopmentAutomated TestingMobileSecurity |
| Open jobs on Jobsy | 14 |
| View page |
Location: Downtown Toronto (In-office / Hybrid model)
The Opportunity
I am currently partnering with a heavily funded, rapidly scaling B2B infrastructure startup. They are building a high-volume data ingestion and API platform that serves as the backbone for major enterprise clients. By aggregating and standardizing massive streams of complex IoT and sensor data, their platform enables traditional industries to build real-time analytics and products. They are looking for senior-level backend engineers to join their Toronto hub to help architect the next phase of their growth.
The Role
This is a high-visibility, high-impact engineering role focused on the core product and API layer. You will be responsible for architecting the distributed systems that process continuous data feeds from hundreds of disparate external sources. Because you are building the foundation that both internal teams and external enterprise clients rely on, you will be deeply involved in product shaping, architectural decision-making, and direct technical consulting with end-users.
Key Responsibilities
Lead the end-to-end design and deployment of robust, scalable backend services and public-facing APIs in a cloud-native AWS environment.
Engineer fault-tolerant integration layers that reliably ingest, normalize, and process unpredictable data from a wide variety of third-party vendors.
Develop foundational platform components, including workflow orchestration, authentication, and system monitoring.
Interface directly with enterprise clients and partners to map out integration strategies, resolve complex technical roadblocks, and understand user needs.
Champion engineering standards and introduce modern, automated tooling to scale development velocity.
Requirements
What We’re Looking For
Scale & Architecture: Extensive experience designing, deploying, and maintaining distributed systems and APIs at a massive scale. You know how to build for resilience and anticipate system failures.
Technical Stack: Deep production expertise in TypeScript and Node.js.
Integration Expertise: A strong track record of taming messy, complex external APIs and turning them into reliable, clean data pipelines.
Customer-Facing Aptitude: You are not looking to hide in the backend. You enjoy being on implementation calls and acting as a technical authority for enterprise customers.
Autonomy: You thrive in ambiguous environments, can scope complex projects independently, and have the judgment to balance technical perfection with business velocity.
Bonus Qualifications
Experience with event-driven or serverless architectures in AWS.
Familiarity with modern asynchronous workflow orchestrators.
Exposure to JVM languages is a plus for cross-functional collaboration with data platform teams.
Benefits
Work Environment
Predominantly On-Site: The engineering team strongly believes in the velocity of in-person collaboration and operates out of a downtown Toronto office 4 days a week.
Comprehensive Benefits: Includes top-tier health/dental coverage, generous wellness and professional development stipends, modern hardware, and 4 weeks of paid time off.
Journal
Only you can see this. Kept on this device, and in your account when you sign in.