Lead Full-Stack Developer
Remote
Full Time
#Software Engineering
#Machine Learning
#AI
#C#
#.NET Core
#JavaScript
#React
#SQL
#REST APIs
#Git
#Test Driven Development
#Agile Scrum
#Python
At JustAnswer we connect millions of people around the world with verified experts through a powerful mix of human insight and advanced AI. Since 2003 we have grown into a global platform serving customers in 196 countries, powering more than 170 connected applications that handle billions of requests each month. We are now looking for a technical leader who can help us expand our use of machine learning and large language models while keeping our systems fast, reliable, and easy to maintain.
About the Role
We are hiring a Lead Full-Stack Developer on a full-time basis. In this position you will guide the design and delivery of AI-driven experiments, mentor engineers across teams, and help scale our machine-learning capabilities inside a remote-first environment that values continuous improvement and data-driven decisions.
Key Responsibilities
- Lead technical decision-making and mentor team members to raise code quality and maintainability across our .NET and React services.
- Design and run A/B and multi-armed bandit experiments that use large language models to improve user experience and business outcomes.
- Collaborate with product, data, and engineering stakeholders to translate business goals into reliable, scalable software architecture.
Requirements
- At least six years of full-stack development experience with C#, .NET Core, JavaScript, and React.
- Strong skills in SQL and database design, including work with large-scale systems such as SQL Server or Elasticsearch.
- Hands-on experience building and consuming REST APIs, applying service-oriented architecture patterns, and using Git for source control.
- Proven practice of Test-Driven Development and writing both unit and integration tests.
- Experience working in Agile Scrum teams that follow continuous integration and continuous deployment practices.
- Practical knowledge of large language models, prompt engineering, and integrating APIs such as OpenAI.
- Upper-intermediate English (B2 level or higher) and the ability to explain complex technical ideas to both technical and non-technical audiences.
- Experience conducting code reviews, mentoring developers, and resolving production issues quickly.
- Python experience is a plus.
Location
This role is fully remote and open to candidates located anywhere.
Compensation and Benefits
We offer a flexible remote-first environment, equitable rewards, and clear paths for career growth inside a mission-driven team that values bold ideas, continuous learning, and global collaboration.
JustAnswer
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Company Size
1001-5000
Markets
