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Salary
$98k – $244k per year (Estimated)
Location
Remote (LATAM)
Seniority
Senior · 5+ years exp
Employment
Contractor
Overview
Company
Impact
Profile match
Upwork is an American freelance marketplace formed in 2015 from the merger of Elance and oDesk, and it connects businesses with independent professionals in software development, design, writing, marketing and increasingly artificial intelligence work. Its revenue comes from taking a percentage of what clients pay freelancers, which means it has spent years balancing take rate against the incentive for established pairs to leave the platform and transact directly. Headquartered in San Francisco and listed on Nasdaq, it has been positioning itself around higher-value professional work rather than competing at the commodity end of the market.

We are seeking a hands-on Software Engineer to apply AI coding assistants and large language models to everyday software development. This role will build capabilities that automate workflows, increase engineering efficiency, and improve developer productivity while diagnosing and resolving coding and AI-related issues. The work includes new product features, Model Context Protocol capabilities, agentic developer environments, and supporting tooling and infrastructure.

Key Responsibilities

- Apply AI coding assistants to improve productivity across everyday software-development work.

- Use large language models effectively for coding, debugging, and automation.

- Design and refine prompts to improve AI performance and output quality.

- Develop product features involving Model Context Protocol capabilities, related frameworks and harnesses, agentic developer environments, and supporting tooling and infrastructure.

- Diagnose and resolve coding and AI-related issues.

- Take technical ownership of implementation challenges and communicate solutions clearly.

Must-Have Skills

- 5+ years of software-development experience.

- Hands-on experience with AI and agentic development.

- Proficiency with AI coding assistants such as Claude Code, Codex, Cursor, or comparable tools.

- Strong understanding of AI principles and underlying technologies.

- Applied experience using large language models rather than building foundation models.

- Prompt-engineering skills to craft effective prompts that optimize AI output.

- Hands-on development experience in Java or Go; Java is preferred.

- Experience with Git.

- Strong problem-solving skills and technical ownership.

- Ability to troubleshoot and resolve development challenges using AI tools.

Nice-to-Have Skills

- Experience with AI coding tools beyond Claude Code, Codex, and Cursor.

- Familiarity with additional AI-assisted development platforms and tools.

- Enterprise experience strongly preferred.

Required Tools & Platforms

- Java or Go, with Java preferred.

- Git.

- AI coding assistants such as Claude Code, Codex, Cursor, or comparable tools.

- Large language models and prompt-engineering workflows.

Location, Time & Engagement

- Candidates must be based in LATAM.

- Full US Central Time coverage is required.

- This is a contract engagement at 40 hours per week.

- The anticipated engagement runs through March 31, 2027.

- This is not currently a contract-to-hire opportunity.

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