Senior Fullstack Developer (React + Python)

At Craftware, we believe that great technology starts with a deep understanding of the real needs of both our clients and our teams. We create solutions that truly matter: we build cloud applications, leverage artificial intelligence, develop Salesforce-based projects, and support companies at every stage of their digital transformation. We collaborate with organizations across a wide range of industries - from those just beginning their journey into cloud technologies to global market leaders.

By joining us, you become part of a place where not only code matters, but people as well. We care about your growth, support initiatives, and above all, build a close-knit team that tackles ambitious challenges together.

Model: remote

Employment type: full-time

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

Requirements:

• 4+ years’ experience as a software engineer

• Proficiency in Python and React

• ETL functions experience

• API Observability – Prometheus, Grafana, OpenTelemetry, etc.

• Deep understanding of software development lifecycle and software development methodologies (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 integration and continuous deployment (CI/CD)

• Advanced understanding of databases and SQL (PostgreSQL) and ORM (SQLAlchemy, SQLModel, Alembic)

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

• Experience with microservices architecture and RESTful API design (FastAPI)

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

• Knowledge of cloud platforms AWS (+Azure is a plus)

• Excellent analytical and problem-solving skills

• Ability to work collaboratively in a team environment

Nice to have:

• Extensive experience with containerization and orchestration tools (Docker, Kubernetes)

• Expertise in specific areas such as machine learning, cybersecurity, or frontend development

• Strong understanding of DevOps practices and tools

• AI/Agentic communication protocols (MCP, A2A)

• Advanced understanding of asynchronous code (asyncio, httpx, uvicorn, etc.)

• SQL optimization, indexing, query planning

• Caching (Redis, in-memory, etc.)

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

• Background jobs & task queues (Celery, RQ, Dramatiq)

• API Security (OAuth2, JWT, rate limiting, etc.)

• Proven ability to lead and mentor junior developers

• Strong understanding of software security principles and best practices

Employment conditions:

• B2B contract,

• Daily support from team leaders,

• Dedicated certification budget,

• Assistance in defining and support in your development path,

• Benefits package,

• Integration trips/events.