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Contract: Senior Staff Back-end Engineer

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Description

Join Upwork's engineering team as a Senior Staff Back-end Engineer. As part of the Ads & Monetization Team, you will contribute to our fast-growing revenue stream. You will work on Connects, Advertising Products, and Marketplace Design. Your role will focus on building scalable, reliable, and maintainable backend solutions.

Responsibilities

  • Collaborate with engineering and data science teams to create outstanding products.

  • Partner with product managers and colleagues to plan and deliver high-quality projects on time.

  • Translate vision and features into actionable plans while considering trade-offs.

  • Design, build, and deliver robust systems that provide value to our business and customers.

  • Handle complex projects with minimal guidance.

  • Lead code and design reviews, mentoring junior engineers and promoting best practices.

  • Improve code quality and reduce technical debt.

  • Monitor system performance and participate in on-call rotations.

  • Utilize collaborative tools such as Gmail, Slack, Confluence, and Jira for communication and project management.

  • Develop and maintain scalable server-side logic, databases, and APIs.

  • Ensure backend systems are secure and reliable.

Requirements

  • 8+ years of experience in software development.

  • Proven experience in leading complex projects from ideation to launch.

  • Proficiency in Java and RESTful services.

  • Expertise in writing well-structured, maintainable unit tests (e.g., JUnit, Mockito).

  • Deep knowledge of relational databases and distributed system design.

  • Experience with high-load web applications and addressing scalability challenges.

  • Experience with financial technology or ledger systems.

  • Strong understanding of software architecture principles.

  • Proven ability to work with cross-functional teams.

  • Excellent interpersonal skills with extensive experience collaborating with multiple stakeholders.

  • Good communication skills in English, both written and verbal.

  • Comfortable working with AWS and cloud-based environments.

  • Eagerness to learn new technologies and continuously develop skills.

About

Upwork is the world’s work marketplace, serving everyone from startups to Fortune 100 companies. With a trust-driven platform, it enables companies and talent to collaborate in innovative ways. Over $3.3 billion of work was completed last year through Upwork's platform by skilled professionals seeking to advance their careers.

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