Mid Backend Developer Jobs in Seattle, WA (NOW HIRING)

QXO is a leading distributor and installer of building products serving an $800 billion market. The company's mission is to modernize the building products industry through advanced technology and a best-in-class customer experience. QXO is North America's largest distributor and installer of insulation, the second-largest distributor of roofing products, the second-largest publicly traded distributor of lumber and building materials, and the largest distributor of waterproofing products. The company is targeting $50 billion in annual revenue within the decade through accretive acquisitions and organic growth. For more information, visit QXO.com.

We are seeking a Staff Software Engineer, Salesforce who bridges the gap between CRM excellence and modern cloud architecture. The ideal candidate isn't just a Salesforce expert, but a versatile full-stack developer comfortable operating beyond the confines of the platform. You will play a pivotal role in architecting end-to-end solutions that leverage Google Cloud Platform (GCP) alongside Salesforce, ensuring our ecosystem is scalable, performant, and seamlessly integrated. 

We need someone who can navigate a complex Apex trigger one hour and a GCP microservice the next. You should bring a deep understanding of modern engineering patterns-including CI/CD, distributed systems, and cloud-native development-to help us push the boundaries of what Salesforce can do when backed by a robust full-stack infrastructure. 

You'll report directly to the Director of Sales and Marketing Technology and work closely with Salesforce administrators and developers, full stack software engineers, product, design, and sales and marketing teams to turn complex requirements into intuitive, fast, and reliable tools for our revenue teams. 

Responsibilities 

Technical Delivery: Lead by example as a primary individual contributor, developing complex features that simultaneously harden our core Salesforce frameworks. You will bridge the gap between abstract architecture and concrete implementation, ensuring that our Apex and Lightning Web Components (LWC) patterns are not just theoretical, but battle-tested in a high-scale, multi-cloud environment. 

Sales and Marketing Hybrid Technology Architecture: Design and maintain high-performance, bi-directional integrations between Salesforce (and adjacent SaaS tooling) and GCP, utilizing Pub/Sub, Cloud Functions, or Dataflow to bypass traditional platform governor limits. 

Full-Stack Strategy: Architect a seamless bridge between the front-end (LWC), the back-end (Apex), and the cloud (GCP). You will be the primary advocate for Service Sovereignty, designing patterns that ensure Salesforce, and GCP interact as a cohesive unit. Your goal is to build a high-performance, 'platform-agnostic' user experience that hides the complexity of cross-cloud API calls and event-driven data flows from the end user. 

Engineering Excellence & Governance: Establish "Shift Left" standards for the Salesforce team, including robust CI/CD pipelines, agentic development, automated testing, and containerized deployment patterns. 

Technical Mentorship: Act as a force multiplier by upskilling mid-level Salesforce developers in full-stack best practices and guiding generalist engineers on Salesforce-specific architectural constraints. 

Build vs. Buy Decisions: Evaluate when to leverage native Salesforce functionality versus when to offload heavy processing to GCP microservices to optimize for cost, performance, and scalability. 

Security & Compliance: Partner with InfoSec to ensure data integrity and encryption standards are maintained as sensitive information moves between Sales, Marketing and adjacent systems.  

Required 

• 8+ years of software engineering experience, with at least 4+ years specifically architecting and developing on the Salesforce platform at scale. 

• Mastery of Apex and LWC: Deep expertise in writing modular, asynchronous, and bulk-safe Apex, along with advanced Lightning Web Component development (State Management, Lightning Message Service). 

• Distributed Systems & Integration: Hands-on experience designing Event-Driven Architectures using tools like Salesforce Platform Events, Change Data Capture (CDC), and message brokers (e.g., Pub/Sub, Kafka, or RabbitMQ). 

• Full-Stack Proficiency: Hands-on experience building applications in at least one backend language outside of Salesforce (e.g., Node.js, Go, Python, or Java). 

• API Design: Expert-level understanding of RESTful API design, OAuth 2.0, and managing service boundaries between a CRM and external cloud services. 

• Modern DevOps/DX: Experience with Salesforce DX (SFDX), version-control-based development (Git), and building automated CI/CD pipelines (GitHub Actions, GitLab CI, or similar). 

• Technical Leadership: Experience acting as a Staff or Lead Engineer, mentoring mid-level developers and driving architectural decisions across multiple teams or workstreams. 

Preferred 

• Framework Builder: A history of creating and open-sourcing (or internally evangelizing) reusable frameworks (e.g., Custom Trigger Frameworks, Unit Testing Mocking utilities, or LWC Base Component libraries). 

• Certified Architect: Holds Salesforce Certified Technical Architect (CTA) or System/Application Architect credentials, or Google Professional Cloud Architect certification. 

• GCP Cloud Native: Deep experience with Google Cloud Platform, specifically Cloud Functions, Cloud Run, Pub/Sub, BigQuery, and Workload Identity Federation. 

• Data Engineering at Scale: Experience managing massive datasets that span Salesforce and external data lakes, including knowledge of Salesforce Connect, Big Objects, or OData. 

• Security-First Mindset: Familiarity with Salesforce Shield, Event Monitoring, and implementing zero-trust security patterns across a multi-cloud stack. 

• System Observability: Experience setting up distributed tracing and centralized logging (e.g., streaming Salesforce logs to GCP Cloud Logging or Splunk). 

• Base pay range: $160,000 - $288,000
• Annual performance bonus
• Long term incentive (equity/stock)
• 401(k) with employer match
• Medical, dental, and vision insurance
• PTO, company holidays, and parental leave
• Paid Time Off/Paid Sick Leave: Applicants can expect to accrue 15 days of paid time off during their first year (4.62 hours for every 80 hours worked) and increased accruals after five years of service.
• Paid training and certifications
• Legal assistance and identity protection
• Pet insurance
• Employee assistance program (EAP)

QXO is an Equal Opportunity Employer. We value diversity and do not discriminate on the basis of race, color, religion, gender or sexual orientation, national origin, age, disability, or any other protected status. 

To comply with Pay Transparency laws, employers must disclose an annual salary range. Actual offers depend on factors such as location, experience, skills, and market data. This position may also offer variable compensation.

Please contact careers@QXO.com if you have any questions related to this job posting.