Senior Product Engineer (Python / JavaScript)

Arbisoft is hiring a Senior Full-Stack Engineer (Python/React.js) with 7+ years of experience for our clients. The role requires strong full-stack expertise, ownership of production applications, and the ability to work across backend, frontend, databases, cloud infrastructure, and AI-powered solutions.

WHAT YOU'LL WORK ON

• Build and maintain production-grade SaaS and web applications across the backend and frontend.
• Develop backend services and APIs using Python, with experience in Django, FastAPI, or similar frameworks.
• Build and optimize frontend applications using React, JavaScript, and TypeScript.
• Design scalable APIs, data models, and application architecture, with a focus on performance and reliability.
• Work with SQL and relational databases, including data-intensive applications and performance optimization.
• Work with cloud infrastructure such as GCP, AWS, or Azure, and contribute to deployment and production reliability.
• Use Git, CI/CD, automated testing, and infrastructure-as-code tools such as Terraform.
• Build or integrate AI-powered features and workflows, leveraging modern AI development tools such as Claude Code, Codex, Cursor, or similar.
• Take ownership of projects from requirements and design through implementation, deployment, and improvement.
• Collaborate with technical and business stakeholders and mentor junior engineers.

WHAT WE'RE LOOKING FOR

• 7+ years of professional software engineering experience, with a strong track record of shipping production software.
• Strong hands-on experience with Python and React.
• Proficiency in Django/FastAPI, JavaScript/TypeScript, SQL, and relational databases.
• Strong understanding of web architecture, APIs, cloud infrastructure, and scalable application design.
• Experience with CI/CD, automated testing, Git, and infrastructure-as-code.
• Strong debugging and problem-solving skills, with the ability to independently identify and resolve production issues.
• Strong system design and technical decision-making skills.
• High ownership, strong communication, and the ability to work effectively with engineers, product teams, and business stakeholders.
• Experience mentoring or providing technical guidance to other engineers.
• Comfortable using AI tools as part of the software development workflow.

NICE TO HAVE

• Experience with AI/LLM-powered products.
• Experience with financial modeling/forecasting, CRM, or other data-intensive applications.
• Experience with GCP/Cloud Run, AWS, or Azure.
• Experience with background jobs, production reliability, or scaling SaaS applications.

HOW WE ASSESS
Judgment over recall: a practical task with AI tools allowed, then interviews on the trade-offs behind your decisions.