Senior Java Developer (f/m/x)

Sii Poland; Kraków; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Contracts with the biggest brands

Profit sharing

MySii app

Job summary

Sii Poland in Krakow is seeking an experienced Full Stack Developer to join our client's team on-site in Cracow. You will participate in all phases of the development life cycle, including analysis, testing, and production support, working closely with a team of 4 to 6 people and a dedicated product owner.

We value collaboration, strong coding practices, and the ability to translate business requirements into robust solutions.

Qualifications

• Minimum 5 years of development experience in Java, Spring Framework and Python.
• Deep understanding of key software development concepts such as SOLID, Clean Code, DDD, and BDD.
• Experience with SQL/NoSQL databases, including PostgreSQL and MongoDB.
• Familiarity with machine learning, NLP, AI, or Data Science is an advantage.
• Ability to teach and collaborate with engineers to design new systems and solutions.
• Effective communication skills in written and oral English.
• Prior experience with event streaming technology.
• Advanced level of English.

Responsibilities

• Participating in all phases of the development life cycle, including analysis, testing, and production support
• Collaborating within a team to take business requirements, break them into stories, and deliver each story iteratively to production
• Providing product support as an integral part of the role, following the principle that the team builds and supports the product
• Identifying areas of technical debt and ensuring a healthy balance between addressing it and delivering new functionality
• Designing solutions for new items while adhering to technology guidelines and constraints
• Engaging in pair programming with other team members to enhance collaboration and knowledge sharing

Skills

Java

Spring Framework

Python

SOLID

Clean Code

DDD

BDD

English communication

Event streaming technology

Tools

PostgreSQL

MongoDB

Job description

We are looking for an experienced Full Stack Developer to join our client's team in Cracow. In this role, you will participate in all parts of the development life cycle, including analysis, testing, and production support, working closely with a team of 4 to 6 people and a dedicated product owner. If you are passionate about software development and enjoy collaborating with others to design innovative solutions, this opportunity may be the right fit for you.

Job no. JOB-RUF2M

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Your tasks

• Participating in all phases of the development life cycle, including analysis, testing, and production support
• Collaborating within a team to take business requirements, break them into stories, and deliver each story iteratively to production
• Providing product support as an integral part of the role, following the principle that the team builds and supports the product
• Identifying areas of technical debt and ensuring a healthy balance between addressing it and delivering new functionality
• Designing solutions for new items while adhering to technology guidelines and constraints
• Engaging in pair programming with other team members to enhance collaboration and knowledge sharing

Requirements

• Minimum 5 years of development experience in Java, Spring Framework and Python
• Deep understanding of key software development concepts such as SOLID, Clean Code, DDD, and BDD
• Experience with SQL/NoSQL databases, including PostgreSQL and MongoDB
• Familiarity with machine learning, NLP, AI, or Data Science is an advantage
• Ability to teach and collaborate with engineers to design new systems and solutions
• Effective communication skills in written and oral English
• Prior experience with event streaming technology
• Advanced level of English

Nice to have

• Experience with Prompt Engineering
• Familiarity with LangChain and LangGraph
• Experience in Clean Architecture

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care