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Added 2 months ago
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Senior Software Engineer
Clutch
Toronto, ON
- $160,000 to $200,000 USD / year
- Full-time
Have experience building frontend, backend, or full-stack applications.
Added 2 months ago
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Senior Software Engineer (AI & Full Stack)
Fable
Canada
- Full-time
Fable is looking for a highly motivated Senior Software Engineer with deep backend expertise, strong full-stack development skills, and hands-on experience building AI-powered applications…
Added 2 months ago
CI
Senior Engineer, TFM, Risk & Total Fund Management Technology
CPP Investments | Investissements RPC
Toronto, ON
- Full-time
As Senior Engineer, Total Fund Management Technology, you will design, build, test, and support technology solutions that enable portfolio construction, monitoring, analytics, and Total…
Added 1 month ago
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AI-Augmented Full-Stack Engineer - Vice President
Citi
Mississauga, ON
- Full-time
Full-Stack Design and Delivery: Design, develop, and deliver full-stack applications using Java and Spring Boot on the backend and Angular on the frontend, with meaningful input into…
Added 2 months ago
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Staff Software Engineer
Equifax
Toronto, ON · CAN - Ontario - Toronto
- Full-time
…are a forward-thinking, committed, and enthusiastic software engineer who is passionate about…
Added 2 months ago
PF
Senior Test Automation Engineer
PureFacts Financial Solutions
Toronto, ON
- $100,000 to $120,000 CAD / year
We are seeking a highly skilled and self-motivated Senior Test Automation Engineer to join our Quality Engineering team. The ideal candidate will have extensive experience in test…
Added 2 months ago
P
Senior Back End Engineer Java/OLAP
Prophix
Toronto, ON · Etobicoke, ON
- Full-time
…more than 3,000 finance teams worldwide. As a Senior Back-End Engineer specializing in Java and OLAP, you will own the Java side of that engine - designing, optimizing, and scaling the cube…
Added 2 months ago
CI
Senior Software Developer - Full Stack Web Application Development
CIeNET International
Markham, ON
- Full-time
The ideal candidate is a hands-on software engineer with strong systems thinking, excellent communication skills, and the ability to own features end-to-end - from concept through…
Added 1 month ago
Staff FullStack Engineer, Okta Secures AI
Okta
Toronto, ON
As a Staff Fullstack Engineer on the Okta Secures AI team, your mission is to build the industry's first Identity Security Fabric for the agentic era. You are the architect of our unified…
Added 2 months ago
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Software Engineer, Full Stack
Gigi
Toronto, ON
- Full-time
We're hiring an AI Builder - a full stack software engineer - to join our engineering team in Toronto and own end-to-end feature development for Gigi, our AI agent.
Added 2 months ago
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Software Engineer III/Senior Software Engineer (Full Stack)
Workday
Vancouver, BC
- Full-time
As a Full Stack Software Engineer in Agent Factory, you’ll help build the user-facing and platform experiences that bring Workday’s AI agents to life. Working within a small,…
Added 2 months ago
S
Backend Engineer – Data Ingestion & APIs, Kitchener, ON
Siemens
Kitchener, ON
- Full-time
About the role: Backend Engineer for Data Ingestion, APIs, and Connectors
Added 2 months ago
S
Backend Engineer – Workflow Execution and Orchestration, Kitchener, ON
Siemens
Kitchener, ON
- Full-time
About the role: Backend Engineer for Workflow Execution and Orchestration
Added 2 months ago
Java Developer
Capgemini
Montreal, QC
We're seeking a Java Engineer to join our Market Risk Technology team. In this role, you will develop and enhance the Market Risk Platform.
Added 1 month ago
C
Senior Java Developer – Vice President
Citi
Mississauga, ON
- Full-time
We are seeking a highly skilled and experienced Senior Java Engineer to join our dynamic team. The ideal candidate will be a hands-on developer with leadership quality, proficient in modern…
Added 2 months ago
E
Staff Engineer, API Design & Governance
eBay
Toronto, ON
- Full-time
We are seeking a highly experienced Software Design Engineer to design and build scalable, high-performance systems & APIs that power seamless end-to-end customer experiences.
Added 2 months ago
T
Fullstack Engineer (Java)
TEKsystems
Toronto, ON
- $80 to $90 CAD / hour
- Contract
Proven expertise in object-oriented design and programming using Java/J2EE.
Added 2 months ago
Senior Core Java Engineer
Capgemini
Montreal, QC
We are seeking a Senior Core Java Engineer to design, develop, and support high-performance, scalable enterprise applications. The ideal candidate will have strong expertise in Core Java,…
Added 2 months ago
TS
Java Developer
Triunity Software
Ottawa, ON · Ontario, ON
- $100,000 to $110,000 CAD / year
- Full-time
Design, develop, and maintain robust Java-based applications and backend services
Added 2 months ago
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Senior Full Stack Engineer
UST
Toronto, ON
- Full-time
UST is searching for a Senior Full Stack Engineer with strong Front End expertise to help build and scale high‑impact digital platforms used by millions of users. This is an opportunity to…
Added 2 months ago
VC
Senior / Intermediate Full Stack Engineer (Backend-Leaning)
Valsoft Corporation
Remote, Canada
- Full-time
- Remote
…restaurant organizations that operate at scale. We’re looking for a backend-leaning Full Stack Engineer who enjoys solving meaningful product problems, designing thoughtful systems, and…
Added 2 months ago
S
Software Engineer II - Agentic AI Foundations
Socure
Toronto, ON
- $135,000 to $175,000 CAD / year
- Full-time
Proficiency in at least one modern backend programming language and ecosystem, such as Java, Go, Python, or similar, with comfort working with cloud-native infrastructure, APIs, and data…
Added 2 months ago
F
Senior Back End Engineer (Data Platform)
Forma.ai
Toronto, ON
- Full-time
As a Senior Engineer, Data Platform, you are expected to operate with strong ownership and sound technical judgment. This includes identifying risks in the work you own, surfacing edge…
Added 2 months ago
Software Development Engineer, Personnel Resource Manager
Amazon
Toronto, ON
The Worblehat team is looking for a Software Development Engineer to join our mission-critical platform that automates operational compliance across Amazon's global fulfillment network.…
Added 1 month ago
Senior Software Engineer - Metadata
Fivetran
ON
Proficiency in a modern backend or systems language such as Python, Java, C++, or C#

eBay

Staff Engineer, API Design & Governance

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Experience: 10+ years of experience in the software industry
Posting language: English
Posted: Aug 17, 2026

Original job description

At eBay, we're more than a global ecommerce leader - we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work - every day. We're in this together, sustaining the future of our customers, our company, and our planet.

Join a team of passionate thinkers, innovators, and dreamers - and help us connect people and build communities to create economic opportunity for all.

About the team:

eBay’s Developer Ecosystem team offers resources that help developers create solutions to make buying and selling on eBay faster and easier. The team builds and manages eBay’s Public APIs and eBay’s world-class Developer Portal, which helps onboard new developers, gets them started with eBay APIs, and answers their questions about our products. APIs are first-class products at eBay. APIs allow our developer community to create powerful experiences and manage their eBay business at scale. Our goal is a large ecosystem of developer applications that contribute to our buyers and sellers.

About the Role:

We are seeking a highly experienced Software Design Engineer to design and build scalable, high-performance systems & APIs that power seamless end-to-end customer experiences.

This is an individual contributor role for a hands-on technical leader who drives architecture, solves complex distributed systems challenges, and partners multi-functionally to deliver customer-first solutions at scale. A key focus of this role is designing clear, scalable, and well-governed APIs and service contracts that enable consistent, high-quality integration across systems.

You will influence system design, internal API standards (REST, GraphQL), and long-term technical strategy while remaining deeply engaged in implementation.

What You’ll Do:

Design and implement scalable, resilient fullstack systems supporting core platform capabilities
Architect high-traffic, distributed systems across multiple domains
Lead the design of robust, intuitive, and evolvable APIs and service contracts
Define and enforce standards for API design, documentation, versioning, observability and governance
Drive clarity and consistency in technical specifications, ensuring they are precise, consumable, and scalable
Write high-quality, maintainable, and performant code
Lead complex technical initiatives end-to-end, from design through production rollout
Apply SOLID principles and advanced design patterns to ensure clean, extensible architectures
Design multi-threaded and highly concurrent systems with strong performance guarantees
Contribute to enterprise architecture decisions and cross-domain technical alignment
Collaborate with Product, UX, Data, and Business teams to translate requirements into scalable technical solutions
Conduct architecture and code reviews to raise engineering standards
Mentor engineers and serve as a technical role model across teams
Proactively identify and resolve system bottlenecks, reliability risks, and scaling challenges

What you will bring:

10+ years of experience in the software industry
Deep expertise in at least one of: Java, Python, or Kotlin
Strong knowledge of software design principles (SOLID) and design patterns
Deep expertise in GraphQL schema composition and evolution, including building user-focused APIs, optimizing query performance, and maintaining backward compatibility at scale.
Proven ability to design and operate GraphQL APIs in large-scale systems, with strong understanding of API architecture (alongside REST/RPC), versioning strategies, and efficient data fetching patterns.
Expert-level understanding of:
- Multi-threading and concurrency
- Distributed systems design
- Enterprise-scale architecture
Demonstrated ability to create clear, consistent, and well-documented service contracts and technical specifications
Experience driving API design standards, consistency, and governance across teams
Experience with agentic coding assistants like claude code, cursor or github copilot
Proven experience building and scaling high-traffic, transaction-heavy systems
Strong understanding of system performance, availability, and observability
Experience working in Agile/Scrum environments

Nice to Have:

Experience with Federated GraphQL architectures (e.g., Apollo Federation or similar)
Experience designing and scaling modern frontend systems using TypeScript/JavaScript with frameworks such as React (or similar)
Experience with microservices and cloud-native architectures
Background in large-scale platforms or multi-tenant architectures
Experience with search systems, recommendation engines, pricing systems, or payment flows
Experience driving technical strategy across multiple team

Technical Leadership Expectations:

Acts as a system-level problem solver - designs for scale, resilience, and long-term maintainability
Champions high-quality API design and treats APIs as long-lived products
Drives clarity, precision, and standardization in system design and specifications
Makes sound architectural trade-offs balancing performance, cost, and development velocity
Customer-obsessed outlook - understands how technical decisions impact performance, reliability, and user experience
Drives technical clarity in ambiguous, high-complexity problem spaces
Sets the standard for engineering quality and operational excellence

Additional Details

This job posting relates to an existing vacancy within eBay.

eBay is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, and disability, or other legally protected status. If you have a need that requires accommodation, please contact us at talent@ebay.com. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBay's commitment to ensuring digital accessibility.

We use cookies to enhance your experience and may use AI tools for administrative tasks in the hiring process. To learn how we handle your personal data and use AI responsibly, please visit our Talent Privacy Notice, Privacy Center, and AI Hiring Guidelines.

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More about this job

Responsibilities

You will design and build scalable, high-performance systems and APIs while driving architecture and technical strategy. The role involves leading complex technical initiatives, mentoring engineers, and ensuring consistent API standards across the organization.

Requirements

Candidates must have 10+ years of software industry experience with deep expertise in Java, Python, or Kotlin. Strong proficiency in distributed systems, GraphQL schema composition, and API design principles is required.

Skills

Java
Python
Kotlin
GraphQL
REST
API Design
Distributed Systems
Software Architecture
System Design
Concurrency
Multi-threading
API Governance
Microservices
Cloud-native
Agile
Scrum

Visa sponsorship

Not detected in the job text

Keywords

API Design
Governance
GraphQL
REST
Distributed Systems
Java
Python
Kotlin
Microservices
Cloud-native
Software Architecture
Concurrency
Multi-threading
Scalability
Observability
Agile
Scrum
Apollo Federation
TypeScript
React
System Design
Technical Leadership
API Versioning
Service Contracts
Performance Optimization
Enterprise Architecture
Backend Engineering
Fullstack
Ecommerce
Developer Ecosystem

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