Senior Business Applications Engineer

Location: İstanbul or Ankara

Working Style: Hybrid

Overview

We are looking for a Senior Business Applications Engineer with 5–6 years of experience to join our growing team and own our Microsoft Dynamics 365 (CRM) platform end to end. In this role, you will administer and develop the system, build integrations with our other business applications, and take responsibility for our Microsoft 365 and Azure environments. You will also lead enterprise software initiatives, from gathering business requirements and evaluating vendors to implementing the chosen solution after purchase. This is a hands-on role with high ownership and direct impact across the company. A very good level of English, both written and spoken, is essential for this role. If you enjoy turning business needs into reliable technical solutions, this opportunity is for you.

Who we are

SESTEK is a global technology company developing AI-powered conversational solutions that empower organizations to be data-driven, enhance efficiency, and offer superior customer experiences. We are an R&D center, and our solutions are developed by a team of over 100 engineers specializing in text-to-speech, speech recognition, natural language processing, and voice biometrics technologies. As of 2022, we are part of Unifonic, a leading Communications Platform as a Service (CPaaS) provider, and we have grown into an international organization with over 500 dynamic team members. We have a customer base of 500 enterprises across 20 countries in the US, EU, and MENA regions.

What we expect

Own, administer, configure, and maintain Microsoft Dynamics 365 Customer Engagement (Sales / Customer Service).

Design and develop customizations such as entities, forms, views, business rules, workflows, and Power Automate flows.

Develop plugins, custom workflow activities, JavaScript, and PCF components where needed.

Manage security roles, business units, teams, and user access.

Handle solution management, deployments across environments, and release planning.

Act as the main point of contact for business users: gather requests, prioritize them, and deliver improvements.

Design and build integrations between Dynamics 365 and internal or third-party systems (ERP, telephony, marketing, finance, etc.) using Dataverse Web API, Azure Functions, Logic Apps, Service Bus, or similar tools.

Run data migration, data quality, and synchronization work, and monitor integrations to resolve failures quickly.

Administer the Microsoft 365 tenant (SharePoint, Teams, OneDrive, and licensing) and manage Microsoft Entra ID (users, groups, conditional access, MFA, and app registrations).

Manage Azure subscriptions and resources with attention to security, cost, and governance.

Support the Power Platform environment and its governance, including environments and maker access.

Gather and document business requirements for new enterprise applications; research the market, compare products, run demos and proofs of concept, and prepare recommendations.

Support the purchasing process together with procurement and management, and coordinate with vendors and partners throughout the project.

Lead implementations after purchase, covering setup, configuration, integration, data migration, user training, and go-live.

Keep technical documentation, configuration records, and integration maps up to date.

Follow Microsoft release updates and propose improvements to the business.

Who we are looking for

BSc in Computer Engineering, Software Engineering, Information Systems, or a related field.

5–6 years of professional experience, with at least 4 years of hands-on experience with Microsoft Dynamics 365 / Dynamics CRM.

Strong experience in Dynamics 365 customization and configuration, and solid knowledge of the Dataverse data model.

Development experience with C# / .NET (plugins, custom workflow activities) and JavaScript.

Experience building integrations using REST/SOAP APIs, Dataverse Web API, and JSON/XML.

Working knowledge of Power Platform (Power Automate, Power Apps).

Hands-on experience administering Microsoft 365 and Microsoft Entra ID (Azure AD).

Experience with core Azure services such as Azure Functions, Logic Apps, App Service, Key Vault, and Storage.

Good SQL knowledge.

Experience gathering requirements from business users and turning them into technical solutions.

Strong analytical thinking and problem-solving skills, and the ability to work independently while managing several priorities.

Clear communication: you can explain technical topics to non-technical colleagues.

Good command of both written and spoken English.

We’re also looking for

A strong can-do attitude and a hands-on, solution-oriented approach: you see what needs to be done and take action.

A strong sense of ownership and accountability: you take responsibility, follow through, and don’t wait to be told what to do.

A flexible and collaborative mindset: you enjoy working across teams and are willing to contribute beyond your core responsibilities when needed.

A willingness to roll up your sleeves, step in where needed, and help the team get things done, even when it falls outside your usual scope.

Nice to have

Knowledge of application security: OWASP Top 10, secure coding, OAuth 2.0 / OpenID Connect, API security, and secrets management.

Familiarity with Microsoft security tools such as Microsoft Defender, Purview, or Intune.

Basic networking knowledge: TCP/IP, DNS, VPN, firewalls, and Azure networking (VNet, NSG, Private Endpoints).

Experience leading an end-to-end enterprise software selection and implementation project.

Experience with Azure DevOps or GitHub, CI/CD pipelines, and ALM for Dynamics 365 / Power Platform.

Experience with Power BI and reporting on CRM data.

Microsoft certifications such as PL-200, PL-400, PL-600, MB-210, MS-102, AZ-104, or AZ-204.

Project management experience or familiarity with Agile methods.

What we can offer you

A chance to be part of a company specializing in artificial intelligence, where you’ll work on real products with real impact.

Flat organizational structure and an energetic team that moves fast and values your voice, so you own outcomes, not just tasks.

Freedom to try new ideas and build your own solutions, in a culture where failing fast is fine as long as we learn from it.

Flexible/hybrid working style with the option to work from our İstanbul or Ankara office.

Private health insurance, meal card, and transportation allowance.

Incentive for graduate and postgraduate studies.

Training opportunities for technical and personal development, and support for certificate programs related to the field, in a culture that encourages you to stay curious and keep learning.

Budget for external activities with your colleagues, organized by the SESTEK Social Activity Committee.

Birthday celebrations, parties, happy hours, and seasonal events.

Breakfast and healthy snacks available all day long in the office.

Exclusive discounts at our partner institutions.

At SESTEK , we believe in the power of diversity and an inclusive organizational culture. All candidates are considered equally regardless of their race, religion, color, age, sex, sexual orientation, gender identity or expression, national or ethnic origin, marital status, family status, disability, or genetic characteristics.

At SESTEK , we place great importance on protecting your personal data. Within the scope of our recruitment processes, you may access the Candidate Privacy Notice regarding the processing of your personal data via the links: English Version / Turkish Version