Senior Software Engineer (Backend)

Senior Software Engineer (Backend) 

For Digital Hub Warsaw, we are looking for:

Senior Software Engineer (Backend)

A senior software engineer delivers and integrates software to form a complete service or product. Individuals in this role will:

• Plan and lead development on sets of related stories

• Have an understanding of the whole system and take responsibility for teaching this to others

• Work with other disciplines to understand what needs to be built

• Coach and mentor more junior colleagues

• Operate the production services being built

• Find ways to improve system robustness, resilience, and stability

Key Tasks & Responsibilities:

Programming and Build

• Collaborate with others when necessary to review user stories and code and develop

• implementation approaches

• Use the agreed implementation approaches to design, code, test, and document programs or scripts of medium-to-high complexity, using the right standards and tools

Systems Design

• Design systems characterized by medium levels of risk, impact, and business or technical complexity

• Select appropriate design standards, methods, and tools, and ensure they are applied

effectively

• Review the systems designs of others to ensure the selection of appropriate technology.

efficient use of resources, and integration of multiple systems and technology

Systems Integration

• Define the integration build

• Co-ordinate build activities across systems

• Understand how to undertake and support integration testing activities

Modern Standards Approach

• Competently apply a modern standards approach and guide others to do so

• Information Security

• Maintain a strong understanding of information security

• Design solutions and services with security controls embedded, specifically engineered with mitigation of security threats as a core feature.

Prototyping

• Approach prototyping as a team activity, actively soliciting prototypes and testing with others

• Establish design patterns and iterate them

• Use a variety of prototyping methods and choose the most appropriate

Service Support

• Identify, locate, and fix faults

User Focus

• Collaborate with user researchers and represent users internally

• Explain the difference between user needs and the desires of the user

• Champion user research to focus on all users

• Prioritize and define approaches to understand the user story, guiding others in doing so

• Offer recommendations on the best tools and methods to use

Availability and Capacity Management

• Manage service components to ensure they meet business needs and performance targets

Qualifications & Competencies (education, skills, experience):

• Bachelor's degree in Computer Science, Software Engineering, Information Technology or a related field

• 5+ experience as a software engineer

• Proficiency in one or more programming languages such as Python

• Deep understanding of software development lifecycle and software developmentmethodologies (e.g .. Agile, Scrum)

• Proficiency in software design and architecture

• Extensive experience with version control systems like Git

• Ability to write clean, maintainable, and efficient code

• Familiarity with integrated development environments (IDEs) like VSCode

• Knowledge of software development tools and practices, including continuous integratior and continuous deployment (CI/CD)

• Advanced understanding of database management and SQL (PostgreSQL) and ORM (SQLAlchemy. SQLModel, Aelmbic)

• Extensive experience with relational, NoSQL and/or vector databases (MongoDB, Redis pgvector)

• Experience with microservices architecture and RESTful API design (FastAPI) API Observability - Prometheus, Grafana, Open Telemetry, etc

• Experience with automated testing frameworks and tools (e.g pytest)

• Knowledge of cloud platforms (AWS, Azure, Google Cloud)

• Excellent analytical and problem-solving skills

• Ability to work collaboratively in a team environment

• Extensive experience with containerization and orchestrations tools (Docker, Kubernetes

• Expertise in a specific area such as machine learning, cybersecurity, or mobile development

• Strong understanding of DevOps practices and tools

• Al/Agentic communication protocols (MCP, A2A)

• Advanced understanding of Asynchronous code (asyncio, httpx, uvicor, ete), SQL Optimization, indexing, query planning Caching (Redis, in-memory, etc)

• Event-driven systems (Kafka, RabbitMQ, etc.)

• Proven ability to lead and mentor junior developers

• Strong understanding of software security principles and best practices

What do We offer: 

• A flexible, remote-hybrid work model 

• Great workplace in a new modern office in Warsaw

• Career development, 360° Feedback & Mentoring programme

• Wide access to professional development tools, trainings, & conferences

• Company Bonus & Reward Structure 

• VIP Medical Care Package (including Dental & Mental health)

• Holiday allowance (“Wczasy pod gruszą”)

• Life & Travel Insurance

• Pension plan

• Co-financed sport card - FitProfit

• Meals Subsidy in Office 

• Budget for Home Office Setup & Maintenance

• Access to Company Game Room equipped with table tennis, soccer table, Sony PlayStation 5 and Xbox Series X consoles setup with premium game passes, and massage chairs

• Tailored-made support in relocation to Warsaw when needed

• Please send your CV in English

WORK LOCATION: WARSAW AL. JEROZOLIMSKIE 158