Senior Full Stack Software Engineer (NodeJS/PHP/Drupal/Java)

SoftServe; Poland; On-site; PLN 170,000 - 250,000; Full time

Job summary

SoftServe is seeking a Senior Full-stack Software Engineer to lead the digital services team in delivering Drupal-based web platforms for a large public sector client in Poland. You will own end-to-end features across the stack, ensuring performance, security, and accessibility while guiding architecture decisions.

You will mentor engineers, drive CI/CD and containerised deployments, and coordinate with hosting and corporate services to deliver robust, compliant applications, migrations, and API

Qualifications

• 10+ years IT experience with Master’s, or 12+ years with Bachelor’s, or 17+ years with secondary education.
• 5+ years server-side web development experience (PHP, Python, Java, Node.js).
• 2+ years Drupal experience with custom module development.
• 5+ years front-end development with HTML5, CSS and JavaScript.
• 3+ years API design and interoperability, including REST or SOAP and SSO integrations.
• English proficiency at CEFR B2 or higher.

Responsibilities

• Lead the digital services team with full-stack feature ownership from front-end to back-end.
• Develop and maintain Drupal-based platforms, custom modules, migrations, and theming.
• Design and implement APIs and integrate with SSO services.
• Guide CI/CD, containerised deployments, and hosting platform coordination.
• Ensure performance, security, accessibility compliance, and documenting technical specs.
• Mentor peers and maintain code quality and testing.

Skills

HTML5

CSS

JavaScript

Front-end development

Server-side development

Drupal

REST/SOAP APIs

Single Sign-On

English (CEFR B2+)

Education

Master's degree in IT

Bachelor's degree in IT

Secondary education

Tools

Drupal

REST/SOAP

CI/CD

Containerization

Cloud platforms

Job description

About The Role

As a Senior Full-stack Software Engineer, you will take on the technical leadership of the digital services team, with responsibility for the full-stack development, integration, and maintenance of web platforms built on the Drupal content management framework for our Client, a large public sector organisation. You will own features across the entire stack — from front-end architecture and user interactions to server-side business logic, database interactions, and deployment on a containerised platform — with accountability for performance, security, and conformity with the web accessibility standards applicable to public sector websites.

Responsibilities

• Develop front-end website architecture and design user interactions on web pages, and develop back-end web applications implementing core business logic, maintaining features across the entire stack from user interfaces and consumed interfaces to server-side logic and database interactions
• Ensure web applications are optimised for performance and functionality across different browsers and devices, conform to the web accessibility standards applicable to public sector websites, and apply data and security best practices — input validation, authentication and authorisation, secure storage, and compliant logging and monitoring
• Provide technical leadership of the digital services team by translating scientific requirements into technical specifications, taking architecture decisions, reviewing code, coordinating front-end and back-end work, and aligning releases and changes with the teams responsible for the hosting platform and corporate services
• Develop and maintain web platforms on the Drupal content management framework, including custom module development, site building, theming, and migration between major versions
• Design and develop application programming interfaces, and integrate the platforms with the Client's central single sign-on service
• Design and implement data visualisation, dashboard, and interactive mapping components, and provide expert advice on visualisation solutions
• Deploy and manage applications on the containerised platform using continuous integration and delivery pipelines, and maintain that environment
• Maintain code integrity and organisation, carry out unit and integration testing, debugging, fixing and validation of code changes, analyse data, processes and code to troubleshoot problems and identify areas for improvement, and write technical documentation

Requirements

• A minimum of 10 years of relevant IT professional experience with a Master's degree; or a minimum of 12 years with a Bachelor's degree; or a minimum of 17 years where only secondary education has been completed.
• At least 5 years of professional experience in server-side development for web applications in PHP, Python, Java, Node.js or a comparable language, including the integration of server-side logic and data with the user interface
• At least 2 years of that experience on the Drupal content management platform, on which the services are delivered, including the development of custom modules
• At least 5 years of professional experience in front-end web development using HTML5, CSS and JavaScript, including responsive design and cross-browser behaviour, with the implementation of user interfaces in at least two distinct projects
• At least 3 years of professional experience in the design and implementation of application programming interfaces and other interoperability mechanisms, covering web services (REST or SOAP), structured data exchange formats, and integration with external authentication or single sign-on services, including at least one interface you designed, secured and documented rather than only consumed
• Very good knowledge of English, both spoken and written, corresponding to Level B2 or higher of the Common European Framework of Reference for Languages (CEFR)

SoftServe is an equal opportunity employer. Qualified applicants will receive consideration regardless of race, color, ancestry, ethnicity, national origin, religion, sex, sexual orientation, gender identity or expression, age, citizenship, disability, health condition, marital or family status, veteran status, or any other characteristic protected by applicable law.