Senior Software Engineer – Platform & Cloud Migration (AWS) 

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