# Solution Architect (FAAS/Ads)Apex Systems, Inc. Toronto, ONContract Oct 09, 2026 Information Technology##

Job Description
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Job Description
Solutions Architect, Fulfillment Integrations*Apex Systems is a global IT services provider, and our staffing practice has an opening in the ecommerce/grocer space for a
* Solutions Architect specializing specifically with experience in API integrations, excellent internal and external stakeholder management and OMS experience *to place at our client a top ecommerce/grocer in North America.*Terms: 6-month possibility with extension

Location:
hybrid TorontoApplication Process: It is best to apply via the medium on which you are seeing this posting. If you encounter technical difficulties submitting your resume, please send a Word version of your resume to Johanna at (email protected)Our Client is transforming the grocery industry. Our Client has become a lifeline for millions of people, and they’re building the team to help push their shopping cart forward. Our Client is a Flex First team. There’s no one-size fits all approach to how we do our best work. Employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events.Solutions Architect, Fulfillment Integrations

Location:
Canada preferred, with a preference for Ontario / Eastern Time; U. S.-based candidates may also be consideredWork Arrangement: RemotePosition OverviewApex Systems is seeking an experienced Solutions Architect to support a growing fulfillment integrations team at Instacart. This is a net-new position created to support continued team growth and an expanding pipeline of retailer integration projects.



The Solutions Architect will be responsible for designing and delivering integrations between Instacart’s fulfillment network and external grocery retailer fulfillment systems. This is a highly hands-on role that combines solution architecture, API integration, technical documentation, and stakeholder communication. The ideal candidate has successfully designed, built, and launched internal-to-external API integrations from the ground up and can clearly communicate complex technical concepts to both engineering teams and external client stakeholders.

Key Responsibilities
* Design end-to-end technical solutions integrating Instacart’s fulfillment systems with external grocery retailer platforms.
* Architect and build API integrations from scratch, with a strong understanding of system interactions, data flows, and integration architecture.
* Develop system design flows, integration use cases, and technical walkthroughs.
* Create prototypes and visual integration diagrams using tools such as Lucidchart or similar platforms.
* Produce detailed solution design documents and technical documentation to support implementation.
* Develop and present technical solution designs using Google Slides or similar presentation tools.
* Partner directly with retailer technical teams to understand requirements and translate business needs into scalable technical solutions.




* Collaborate closely with internal Product and Engineering teams throughout the design and implementation lifecycle.
* Communicate retailer integration requirements and technical details across internal stakeholders.
* Support integrations through implementation and successful production deployment.Required Qualifications* Demonstrated experience designing and building API integrations from scratch, particularly integrations connecting internal platforms with external systems.
* Strong understanding of API architecture, data flows, system design, and how distributed systems communicate.
* Experience taking integrations beyond design and successfully deploying solutions into production.
* Hands-on technical background with a modern programming language such as Python, Ruby, Java, C++, or similar.
* Experience creating technical architecture diagrams, solution design documentation, and system flows.
* Robust written and verbal communication skills.
* Ability to communicate effectively with both highly technical engineering teams and non-technical stakeholders.
* Comfortable working directly with external clients or partners in a technical capacity.
* Proven ability to collaborate across Product, Engineering, and business teams.Preferred Qualifications* Experience working with Ruby, as it is a primary language within Instacart’s environment.
* Previous experience within fulfillment, third-party fulfillment, logistics, supply chain, or e-commerce environments.
* Experience designing integrations between enterprise platforms and external customer or partner systems.
* Background with organizations operating complex fulfillment or technology ecosystems, such as Amazon, Shopify, Google, or comparable companies.
* Experience suppo

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