April 10, 2026

Salesforce Front-end Developer (f/m/x)

Mid • Remote

Bialystok, Poland

We are looking for an experienced Salesforce Developer with a strong focus on building modern, responsive user interfaces within Experience Cloud. This role is ideal for someone who not only understands the Salesforce ecosystem but also brings a broader frontend perspective—someone who cares about clean layouts, great user experience, accessibility, and building well-structured B2B web solutions.

Your tasks

Design and develop solutions within Salesforce Experience Cloud using Aura and LWR
Build modern user interfaces using Lightning Web Components (LWC)
Implement advanced business logic in Apex (Triggers, Batch, Schedulers)
Develop responsive and visually appealing frontend layers using JavaScript (ES6+), HTML5, and CSS
Design and implement integrations with external systems (REST/SOAP APIs)
Work in an Agile environment and support CI/CD processes and deployments

Requirements

At least 3 years of experience in a similar position
Hands-on experience building and customizing both Aura and Lightning Web Runtime (LWR) templates
Proficiency in Apex (Triggers, Batch, Schedulers), Lightning Web Components (LWC)
Strong skills in JavaScript (ES6+), CSS, and HTML5 to build highly branded, responsive user experiences
Experience designing and consuming REST/SOAP APIs to connect Salesforce with external systems
Strong understanding of object-oriented programming and design patterns.
Experience working in Agile environments and familiarity with tools such as Azure DevOps
Understanding of CI/CD processes and version control systems (Git/GitHub)
Ability to translate business requirements into clear technical specifications
Proficiency in English
Fluent Polish required
Residing in Poland required

Nice-to-have requirements

Salesforce Platform Developer I & II
Salesforce Certified JavaScript Developer
Experience with Copado

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 76M 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
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

If you want to work on systems with high operational significance — apply now!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

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