Senior Application Developer - Microsoft Dynamics CRM

Atos; Warszawa; Hybrid; PLN 180,000 - 270,000; Full time

Benefits offered by this job

Hybrid work model

Private medical care

Life insurance

Mental health & wellbeing support

Discounts platform

Job summary

Atos, a global leader in digital transformation, is seeking a Senior Application Developer with deep Microsoft Dynamics CRM expertise. You will design, customize, and integrate CRM solutions, collaborating with stakeholders across international teams to deliver scalable business applications.

You will work on Dynamics 365 Online/On-Prem, build plugins, workflows, and APIs using C# and .NET, and contribute to performance, security and maintainability.

Qualifications

• 8+ years of hands-on experience in Microsoft Dynamics CRM development.
• Strong experience with Microsoft Dynamics CRM 2013 and Dynamics 365 (Online and/or On-Premises).
• Proficiency in C#, .NET Framework, and JavaScript.

Responsibilities

• Develop, customize, and maintain solutions within Microsoft Dynamics CRM and Dynamics 365 environments.
• Configure and customize entities, forms, workflows, business rules, and dashboards.
• Design and develop plugins, custom workflow activities, and integrations using C# and .NET technologies.
• Support and enhance legacy Microsoft Dynamics CRM 2013 applications.
• Collaborate with business analysts, functional consultants, and end users to understand and implement business requirements.
• Integrate CRM systems with external applications using APIs, web services, and Power Platform technologies.
• Participate in code reviews, testing activities, troubleshooting, and defect resolution.
• Ensure application performance, security, stability, and maintainability.
• Contribute to technical documentation and support deployment activities.
• Provide ongoing support and continuous improvement for existing CRM solutions.

Skills

C#

.NET Framework

JavaScript

Microsoft Dynamics CRM

Dynamics CRM 2013

CRM Customizations

REST/SOAP APIs

Tools

Power Platform

Azure Functions

DevOps

Job description

Atos is the Atos Group brand dedicated to AI-powered, secure, end-to-end digital services. Atos designs, develops, and operates critical digital environments that drive performance, resilience and sovereignty, helping public and private organizations worldwide retain control over their data and infrastructures, while meeting regulatory requirements.

With more than 52,000 employees serving over 4,500 clients across 54 countries, Atos helps modernize core IT systems, accelerate cloud and data transformation, strengthen cybersecurity, and deliver secure digital workplace environments to support its clients, its employees and society. Atos also provides consulting and advisory services through its Atos Amplify brand.

A trusted partner in operating complex and mission-critical environments, Atos supports organizations across highly regulated and sovereign contexts.

About Atos Group

Atos Group is a global leader in digital transformation with c. 54,000 employees and annual revenue of c. €7.2 billion, operating in 54 countries under two brands – Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is listed on Euronext Paris.

Senior Application Developer – Microsoft Dynamics CRM

About The Role

We are looking for an experienced Senior Application Developer with strong expertise in Microsoft Dynamics CRM 2013 and Dynamics 365 environments. In this role, you will be responsible for developing, enhancing, integrating, and supporting enterprise CRM solutions while collaborating with functional consultants, business stakeholders, and technical teams. The ideal candidate combines solid CRM development experience with strong problem-solving skills and a passion for delivering reliable, scalable, and maintainable business applications.

Key Responsibilities

• Develop, customize, and maintain solutions within Microsoft Dynamics CRM and Dynamics 365 environments.
• Configure and customize entities, forms, workflows, business rules, and dashboards.
• Design and develop plugins, custom workflow activities, and integrations using C# and .NET technologies.
• Support and enhance legacy Microsoft Dynamics CRM 2013 applications.
• Collaborate with business analysts, functional consultants, and end users to understand and implement business requirements.
• Integrate CRM systems with external applications using APIs, web services, and Power Platform technologies.
• Participate in code reviews, testing activities, troubleshooting, and defect resolution.
• Ensure application performance, security, stability, and maintainability.
• Contribute to technical documentation and support deployment activities.
• Provide ongoing support and continuous improvement for existing CRM solutions.

What We Look For

• 8+ years of hands‑on experience in Microsoft Dynamics CRM development.
• Strong experience with Microsoft Dynamics CRM 2013 and Dynamics 365 (Online and/or On‑Premises).
• Proficiency in C#, .NET Framework, and JavaScript.
• Experience developing CRM customizations, plugins, workflows, and integrations.
• Good understanding of Dynamics CRM architecture, security model, data structures, and integration patterns.
• Experience working with REST/SOAP APIs and web services.
• Strong analytical, troubleshooting, and problem‑solving skills.
• Effective communication skills and ability to work within international teams.
• Professional working proficiency in English (B2 level or higher), both written and spoken.

Nice to Have

• Experience with Power Platform, including Power Automate and Power Apps.
• Familiarity with Azure services such as Azure Functions, Logic Apps, and DevOps CI/CD pipelines.
• Microsoft Dynamics CRM or Power Platform certifications.
• Experience working in Agile or Scrum environments.
• Knowledge of Dynamics 365 Customer Engagement modules, including Sales, Customer Service, or Field Service.

What We Offer

• Flexible hybrid work model designed to support a healthy work‑life balance (up to 2 office days per month, depending on location)
• Competitive compensation package aligned with your experience and expertise
• Opportunity to work on enterprise‑scale Microsoft Dynamics CRM and Dynamics 365 solutions supporting global organizations
• Private medical care, life insurance, and mental health & wellbeing support programs
• Benefits platform offering shopping, entertainment, and sports discounts
• Multisport card and b‑active program
• Access to technical training, certifications, and continuous learning opportunities
• Participation in conferences, technology communities, and knowledge‑sharing initiatives
• Recognition programs, employee referral bonuses, and special occasion gifts
• Additional days off and experience‑based benefits
• Opportunities to participate in charity, sustainability, and volunteering initiatives

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment.

Choose your future. Choose Atos.