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

Docugami

Back End Software Engineer

Kirkland, WA · On-site +1

... software product businesses. We're looking for Back End Engineers to join our team and help make these breakthroughs happen. Docugami values engineers from diverse backgrounds who are strong in ...

Docugami

Back End Software Engineer

Kirkland, WA · On-site

... software product businesses. We're looking for Back End Engineers to join our team and help make these breakthroughs happen. Docugami values engineers from diverse backgrounds who are strong in ...

OpenAI

Backend Software Engineer (Evals)

Seattle, WA · On-site

$230K - $385K/yr

About the Role We're looking for a Backend Software Engineer with experience working in ML/LLM-heavy domains to help to design and build an evals infrastructure that measures the quality of OpenAI ...

DAT

Senior Backend Software Engineer

Seattle, WA

$139K - $183K/yr

... Backend Software Engineer to join the Broker Tech team building the Convoy Platform, a digital ... Identify and drive cross-cutting improvements to shared libraries, CI/CD pipelines, developer ...

DAT

Senior Backend Software Engineer

Seattle, WA · On-site

$139K - $183K/yr

... Backend Software Engineer to join the Broker Tech team building the Convoy Platform, a digital ... Identify and drive cross-cutting improvements to shared libraries, CI/CD pipelines, developer ...

Otter

Senior Backend Software Engineer

Seattle, WA · On-site

$167K - $230K/yr

What you'll do As a Software Engineer on the Otter Marketing/Boost team, you'll build the AI ... Build backend services for campaign management, budgeting, and a multi-channel pipeline that ...

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All JobsBackend Software Developer JobsBackend Software Developer Jobs in Seattle, WA

Backend Software Developer information

See Seattle, WA salary details

$13

$65

$96

How much do backend software developer jobs pay per hour?

As of Jul 29, 2026, the average hourly pay for backend software developer in Seattle, WA is $65.74, according to ZipRecruiter salary data. Most workers in this role earn between $53.94 and $77.74 per hour, depending on experience, location, and employer.

What is the difference between Backend Software Developer vs Frontend Software Developer?

AspectBackend Software DeveloperFrontend Software Developer
Primary FocusServer-side logic, databases, APIsUser interface, client-side interactions
Required SkillsProgramming languages like Java, Python, SQLHTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentServer infrastructure, cloud servicesDesign tools, browser testing
Common UsageBuilding and maintaining backend systemsCreating engaging user interfaces

Backend Software Developers focus on server-side development, managing databases, and APIs, while Frontend Software Developers work on the visual and interactive aspects of websites and applications. Both roles are essential in full-stack development but differ in their technical skills and daily tasks.

What does a Backend Software Developer do?

A Backend Software Developer is responsible for building and maintaining the server-side logic, databases, and application programming interfaces (APIs) that power web and mobile applications. They ensure that data is properly stored, secured, and retrieved, and that the backend communicates effectively with the frontend or user-facing side. Backend developers often work with programming languages like Java, Python, Ruby, or Node.js, and use frameworks and tools to optimize application performance and scalability. Their work is crucial for ensuring that applications run smoothly, handle user requests efficiently, and remain secure.

What are the key skills and qualifications needed to thrive as a Backend Software Developer, and why are they important?

To thrive as a Backend Software Developer, you need strong programming skills (such as Java, Python, or Node.js), a solid understanding of algorithms, data structures, and database management, often supported by a degree in computer science or a related field. Familiarity with frameworks (like Spring or Django), RESTful APIs, version control systems (such as Git), and cloud platforms is typically expected, along with relevant certifications being beneficial. Problem-solving abilities, attention to detail, and effective communication are the soft skills that set outstanding backend developers apart. These skills and qualities are crucial for building scalable, reliable, and secure server-side applications that meet business and user needs.

What are some common challenges faced by Backend Software Developers when integrating new technologies into existing systems?

Backend Software Developers often encounter challenges when integrating new technologies, such as ensuring compatibility with legacy systems, maintaining data integrity during migrations, and minimizing downtime for end users. They must also carefully manage dependencies and address potential security vulnerabilities introduced by new components. Collaboration with DevOps, frontend teams, and QA is crucial to ensure smooth deployment and comprehensive testing throughout the integration process.
What are the most commonly searched types of Backend Software Developer jobs in Seattle, WA? The most popular types of Backend Software Developer jobs in Seattle, WA are:
What are popular job titles related to Backend Software Developer jobs in Seattle, WA? For Backend Software Developer jobs in Seattle, WA, the most frequently searched job titles are:
What job categories do people searching Backend Software Developer jobs in Seattle, WA look for? The top searched job categories for Backend Software Developer jobs in Seattle, WA are:
Backend Software Developer jobs near you
Infographic showing various Backend Software Developer job openings in Seattle, WA as of July 2026, with employment types broken down into 67% Full Time, and 33% Contract. Highlights an 100% In-person job distribution, with an average salary of $136,738 per year, or $65.7 per hour.

Backend Software Engineer - Saga

Rune Technologies

Seattle, WA • On-site

Full-time

Re-posted 8 days ago

Job description

Job Summary:
Rune Technologies builds mission-critical software for military logistics and sustainment. As a Backend Software Engineer at Rune, you will design and implement production-grade GenAI systems to support logistics technology for the U.S. and allied militaries, working closely with a team of engineers and operational experts.
Responsibilities:
• Design, build, and deploy production-grade GenAI systems -- including RAG architectures, vector databases, LLM integrations, and tool-call frameworks -- in support of Saga, Rune's AI agentic product layer.
• Build and maintain evaluation and testing harnesses to validate LLM output quality and catch regressions in production.
• Collaborate with the broader platform and product teams to integrate AI capabilities into TyrOS workflows.
• Participate in technical design discussions and code reviews, contributing to a culture of engineering rigor and mission focus.
• Triage and debug issues in production, ensuring reliability and rapid iteration in support of operational needs.
• Work closely with engineers, product managers, and military stakeholders to ensure AI systems meet real-world sustainment requirements.
Qualifications:
Required:
• 4+ years of experience in software engineering, with a strong backend foundation -- distributed systems, APIs, production-grade software.
• Hands-on experience building GenAI systems: vector databases, LLM integration, RAG architectures, and evaluation harnesses for LLM output.
• Familiarity with tool routing, tool-call validation, and common LLM failure modes.
• Understanding of the science underlying the systems you build -- not just how to wire them together, but why they work and where they break.
• Background at an AI-native company, or a clear transition from backend engineering into AI specialization.
• Strong sense of ownership and a bias for action.
Preferred:
• Experience with fine-tuning or model evaluation workflows.
• Familiarity with AI infrastructure: embedding pipelines and inference optimization.
• Experience working on software in defense, aerospace, or other complex operational domains.
• Experience deploying software to production environments, including cloud (AWS, Kubernetes) and edge infrastructure.
Company:
Rune Technologies develops AI-enabled predictive logistics solutions for military operations. Founded in 2024, the company is headquartered in Arlington, USA, with a team of 51-200 employees. The company is currently Growth Stage.

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