Salary
≈ $49k – $102k per year (Estimated)
Location
Remote (Mexico)
Seniority
Senior
Employment
Contractor
Confirmed on the employer's own hiring board on Sep 27, 2026. First seen by Alion on Sep 23, 2026. Upwork scores B on the Alion truth index.
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.
An enterprise client is seeking a Senior Software Development Engineer to join their agile development team focused on building and supporting payment domain services. The Senior Software Development Engineer will design, develop and implement scalable software solutions capable of supporting high transaction volumes.
- Work with an agile development team that designs, develops and maintains scalable services.
- Responsible for writing technical design specifications.
- Recommend and develop an architectural and detailed design that is used by other members of the development teams.
- Coach the team on software best practices (design, coding, troubleshooting, work breakdown, work estimation, refactor strategies, automated testing, etc.)
- Work closely with the other teams to optimize system architecture and project efficiency.
- Partner with our Product Owner to plan work and prioritization.
- Maintain high standards of software quality within the team by establishing good practices and habits.
- Assist in the collection and documentation of user's requirements, development of user stories, estimates and work plans.
- Collaborate and add value through participation in peer code reviews, providing comments and suggestions.
- Analyze and resolve technical and application problems.
- Regular practice of CI/CD.
- Support, maintain and document software functionality.
- Research and evaluate a variety of software products; create PoCs as necessary to demonstrate new ideas and technologies.
- Communication skills: Must be able to articulate and have a strong technical vocabulary
- Must be able to coach the team on software best practices (design, coding, troubleshooting, work breakdown, work estimation, refactor strategies, automated testing, etc.)
- Must have strong knowledge of system architecture, best practices and design patterns
- Evaluate and identify new technologies for implementation
- Strong background with .NET Core, C#, Kubernetes / Docker
- Knowledge and experience in Distributed systems, MicroServices, SOA and n-tier architectures
- Strong knowledge of Relational and non-relational DBs
- Knowledge of REST API, event-driven architecture applications, caching, scaling, security, etc.
- Strong knowledge of Managed Memory Architecture / Garbage Collector / Cache Management
- DDD and event driven architectures
- Only applicants located in Mexico may apply.
- Fully remote opportunity.
- Must be able to work full-time during the engagement.
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