Senior Python Developer

We are looking for a Senior Python Developer with strong AWS serverless expertise to optimize systems, resolve performance challenges, and share best practices across our internal community. Requirements • At least 7 years of experience in software development • Proven experience as a Senior Python Developer with strong problem-solving and debugging skills • Deep hands-on expertise in AWS serverless ecosystems (Lambda, DynamoDB, and related services) • Familiarity with event-driven and integration patterns (MuleSoft or other middleware/integration tools) • Strong communication and collaboration skills, with the ability to document and share technical best practices • Experience mentoring teams or driving technical communities will be a plus • English proficiency at B2/C1 level (Upper-Intermediate to Advanced) Responsibilities • Review, refactor, and optimize Python-based solutions for performance, scalability, and maintainability • Identify and resolve technical performance issues across AWS serverless workloads • Design and implement solutions leveraging AWS services such as Lambda, DynamoDB, API Gateway, Step Functions, SQS/SNS, EventBridge, and others • Support and improve system integrations (e.g., MuleSoft and similar platforms) • Contribute to a community of practice, sharing guidelines and best practices for Python development We Offer • A full-time job and a long-term contract • Paid vacation and sick leave • Managing your taxes and accounting • Optional benefits package that includes Health insurance, Gym membership, English courses, compensation of certification, courses, and training • Creative and lively team of IT specialists, adequate management, and zero unnecessary bureaucracy About Us WiserBrand is a rapidly growing US-UA web development company providing full-cycle services all over the globe. The main direction of our company is eCommerce, but we also have expertise in other domains. We started 10 years ago as a small project providing digital marketing services. Therefore, the project grew into an outsourcing & outstaffing company that provides web development, digital marketing, customer support, and outstaffing projects for clients all over the globe. Headquarters based in New York City. Also, we have development and support offices in Kharkiv and Buenos Aires, with about 150 people in total.