We’re Hiring: Senior Software Engineer (Python/FastAPI & React, Azure Cloud) | Across Poland
We are seeking a Senior Software Engineer with strong backend and frontend skills, deep cloud experience, and a passion for building scalable, secure applications. This role focuses on developing distributed microservices using Python (FastAPI) and React, with deployment on Azure Cloud.
You’ll work on a high-impact product team, collaborating across functions to drive the design and implementation of modern SaaS systems, while also mentoring others and contributing to architectural decisions.
Key Responsibilities:
- Design and develop scalable backend services and RESTful APIs using Python (FastAPI)
- Build and maintain modern frontend applications using React.js, Redux, and Hooks
- Deploy and operate services in Azure Cloud, leveraging AKS, ARM, ACR, Key Vaults, and IAM/Entra
- Develop and optimize data models using MongoDB, PostgreSQL, or CosmosDB
- Implement secure coding practices, observability, and logging using tools like Grafana, Prometheus, Datadog, or Application Insights
- Architect robust CI/CD pipelines (Harness or similar) and containerized deployments with Kubernetes/OpenShift
- Design systems with asynchronous communication using RabbitMQ or other messaging brokers
- Ensure strong test coverage with unit, integration, and E2E testing frameworks
- Participate in agile ceremonies, code reviews, and technical planning
- Provide mentorship and guidance to junior team members
Role-Specific Focus:
- Take ownership of full-cycle development in a microservices-based architecture
- Apply secure design and role-based access control for cloud-native services
- Actively contribute to documentation, process improvement, and technical knowledge-sharing
- Engage with stakeholders to transform business needs into scalable technical solutions
Requirements:
- 5+ years of hands-on software development experience, preferably in modern SaaS environments
- Expertise in Python, including building APIs with FastAPI
- Strong proficiency in React.js and frontend tooling (Webpack, Redux, Hooks)
- Deep experience with Azure Cloud, especially in networking, IAM, and DevOps
- Solid background in containerization using Kubernetes or OpenShift
- Familiar with observability best practices and monitoring for distributed systems
- Experience with datastores like PostgreSQL, MongoDB, or CosmosDB
- Solid understanding of asynchronous systems and message brokers (RabbitMQ or similar)
- Bachelor’s or master’s in computer science or related discipline
Nice to Have:
- Experience with GraphQL
- Exposure to additional Azure networking, caching, and storage services
About Us:
Ascendion is a global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey. We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity. Guided by our “Engineering to the power of AI” [EngineeringAI] methodology, we integrate AI into software engineering, enterprise operations, and talent orchestration, to address critical challenges of trust, speed, and capital. For more information, please go to www.ascendion.com
With Ascendion (www.ascendion.com), you:
- Will get to work on numerous challenging and exciting projects on our various offerings including Salesforce, AI/Data Science, Generative AI/ML, Automation, Cloud Enterprise and Product/Platform Engineering.
- At Ascendion you have high chances of project extension or redeployment to other clients.
- Additionally, you can also share CV of anyone you know. We have a referral policy in place