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Job Overview We are seeking an experienced Python Lead Developer with 5+ years of experience to design, develop, and lead the delivery of scalable backend systems and API-driven applications. The role focuses on building high-performance services using Python, FastAPI, MongoDB, vector databases such as Milvus, and cloud-native DevOps practices on AWS. Key Responsibilities Backend Development: Design, develop, and maintain scalable backend applications and microservices using Python and FastAPI. API Engineering: Build and optimize REST APIs for internal and external integrations with a focus on performance, security, and maintainability. Database Management: Work with MongoDB and vector databases like Milvus to support data-intensive and AI-enabled applications. Cloud & DevOps: Deploy and manage applications on AWS using DevOps best practices, CI/CD pipelines, and automation tools such as Jenkins. Technical Leadership: Lead design discussions, review code, mentor developers, and enforce engineering standards and best practices across the team. Cross-Functional Collaboration: Partner with product, QA, and infrastructure teams to deliver reliable, scalable, and business-aligned solutions. Requirements Experience: 5+ years of hands-on experience in backend development with Python, including experience leading or mentoring development teams. Frameworks & APIs: Strong experience in FastAPI and designing, developing, and maintaining REST APIs. Databases: Proficiency with MongoDB and exposure to vector databases such as Milvus. Cloud & DevOps: Practical experience with AWS, CI/CD pipelines, containerized deployments, and automation using Jenkins. Architecture & Quality: Good understanding of microservices architecture, scalable system design, debugging, testing, and secure coding practices. Soft Skills: Strong communication, problem-solving, ownership mindset, and the ability to work effectively in cross-functional teams. Key Skills Python, FastAPI, REST API Development, MongoDB, Milvus, Vector Databases, AWS, DevOps, Jenkins, CI/CD, Microservices, Backend Development, System Design, Schema Design, Team Leadership. .
Here's where they are and how to stand out in your next interview.
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Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.