C/C++ Developer with SQL

About the project

You will join an international team working on a payment system for a large chain of British supermarkets. The team will be responsible for implementing software based on the architecture prepared by the client for the terminal and server modules.

By joining us, you become a member of the Embedded Competence Center at Sii - an internal organizational unit bringing together more than 500 specialists across Poland! We are currently working on approximately 100 projects for 50 clients across various industries, including automotive, IoT, telecommunications, and medical. We focus on development and knowledge exchange by organizing Embedded Academies, training, technical mentoring or enabling project changes.

Your responsibilities

• Developing and supporting new and existing modules

• Creating and updating documentation

• Testing your code

• Deploying prepared solutions

Our requirements

• Min. 5 years of experience in C/C++ development

• At least 1 year of experience in Golang development

• Solid experience with SQL and relational databases

• Knowledge of any version control system (especially Git)

• Fundamental Python skills applied to everyday tasks

• Basic Linux skills from a user perspective, including shell commands and file system navigation

• Fluency in English

• Strong logical and analytical thinking skills, enabling the ability to identify patterns, solve complex problems, and make well-reasoned decisions

• Fluent in Polish and residing in Poland required

Optional

• Experience in large-scale IT projects (e.g., microservices-based architectures, banking, or payment systems)

• Knowledge of Java, as well as containerization and automation tools such as Docker and Puppet

What we offer

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market

• We share the profit with Workers - over PLN 60M has already been allocated for this aim since 2022

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more

• Comfortable workplace – class A offices or remote work

• Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose

• Fantastic atmosphere created by all Sii Power People

Recruitment stages

1 Send your CV

2 Talk to us about your expectations

3 Learn more about our projects and choose the best

4 Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment. In a survey, as many as 90% of our employees responded that Sii is a great place to work, and 95% of them think we have a great atmosphere here.