A global product-focused technology company is looking for a Senior Software Engineer with strong expertise in cloud platforms and AWS to support the migration of legacy systems to a modern, scalable, serverless architecture. 

This role sits at the intersection of software engineering, cloud architecture, and platform enablement, offering the opportunity to make a significant impact on a large-scale technical transformation. You will work with complex systems, lead critical migration initiatives, and help shape long-term architectural decisions. 

Experience / Skills required: 

Must have: 

Experience: 10+ years of professional software engineering experience, ideally in large-scale or enterprise systems  Python: Strong, hands-on production experience  AWS Serverless: 3+ years of daily experience with Lambda, DynamoDB, API Gateway, and Step Functions  Legacy Migration: Proven experience migrating legacy or monolithic systems to cloud-native architectures  Infrastructure as Code: AWS CDK (required), Terraform and/or CloudFormation Data Stores: Strong experience with PostgreSQL and DynamoDB  API & Security: Deep understanding of authentication, authorisation, and secure API design  Cloud Performance: Ability to diagnose and resolve scalability, reliability, and performance issues in production  Upper-Intermediate English and better 

Responsibilities: 

Lead the migration of platform and backend services from legacy infrastructure to AWS cloud and serverless environments  Design, implement, and evolve cloud-native platform solutions with a strong focus on scalability and reliability  Build and maintain shared platform services and tooling to support multiple product teams  Own and improve cloud architecture, infrastructure, and deployment patterns  Collaborate closely with product, engineering, and infrastructure teams to deliver complex migration initiatives  Drive adoption of best practices in cloud security, performance, and cost optimization  Contribute hands-on code across backend and platform components  Support and improve CI/CD pipelines and infrastructure-as-code workflows  Participate in architectural reviews and influence technical direction and platform strategy  Troubleshoot and resolve complex production and platform-level issues  Ensure systems meet operational, reliability, and observability standards 

We offer:  

Competitive salary with the regular review  Medical Insurance after 3 months probation period (can be used in Ukraine)  Vacation (up to 20 working days)  Paid sick leaves (10 working days)  National Holidays as paid time off (11 days)  Online English courses  Accountant assistance and legal support  Flexible working schedule, remote, office-based or hybrid format Fully-equipped perfect office space located in the city center (ready for work in blackouts)  Direct cooperation with the customer  Dynamic environment with low level of bureaucracy and great team spirit  Challenging projects in diverse business domains and a variety of tech stacks  Communication with Top/Senior level specialists to strengthen your hard skills  Online/offline teambuildings  Volunteering culture development and support