Senior .NET Developer

Zain; Manama; On-site; BHD 18,000 - 28,000; Full time

Job summary

Zain is seeking a Senior .NET Developer to lead design, development and maintenance of robust .NET-based systems across desktop applications, services, APIs and integrations. You will work with stakeholders, architects, and cross-functional teams to drive end-to-end delivery, focusing on performance, security, and reliability.

The role requires 5+ years in .NET (C#) including WCF/REST, IIS, and high-availability API design, with strong collaboration and mentoring of other developers.

Qualifications

• Bachelor's degree in a relevant field.
• 5+ years hands-on experience with .NET (C#), including desktop apps, Windows services, and ASP.NET.
• Experience with WCF and RESTful services.
• Experience designing load-balanced, fault-tolerant APIs.
• Experience with Git and collaborative development workflows.
• Strong requirements gathering, impact analysis, and documentation.

Responsibilities

• Design, develop, and maintain .NET applications including desktop, console, Windows services, and web-based solutions.
• Lead the development and integration of high-availability APIs and backend services.
• Implement secure and scalable REST and WCF services.
• Design and deploy applications on IIS with performance tuning and load balancing.
• Collaborate with stakeholders to gather and refine requirements.
• Translate business needs into functional and technical specs.
• Perform impact analysis, scoping, and solution design.
• Troubleshoot issues, root cause analysis, and fixes.
• Optimize performance of code, queries, and behavior.
• Lead planning and estimation sessions; ensure timely delivery.
• Work with Git and collaborative workflows; partner with DevOps for deployments.
• Engage QA for testing, validation, and bug fixes.
• Stay updated on trends and recommend improvements.

Skills

5+ years .NET (C#)

desktop applications

Windows services

ASP.NET

console applications

libraries (DLLs)

service-oriented architectures

WCF

RESTful services

load balancing / HA APIs

Git & workflows

requirements gathering

impact analysis

design specifications

third‑party services TCP/IP WebSockets

security in .NET

reporting tools & diagnostics

Education

Bachelor s Degree in Computer Science or Programming

Tools

Git

IIS

DLLs

Job description

About the Role As a Senior .NET Developer, the individual takes a lead role in designing, developing, and maintaining robust software solutions across desktop applications, services, APIs, and integrations. They are responsible for delivering scalable and secure .NET-based systems that align with business requirements, while ensuring performance, reliability, and maintainability. The Senior .NET Developer works closely with business stakeholders, architects, and cross-functional teams to drive end-to-end solution delivery.

What We Need From You

• Design, develop, and maintain .NET applications including desktop, console, Windows services, and web-based solutions.
• Lead the development and integration of high-availability APIs and backend services.
• Implement and maintain secure and scalable REST and WCF services.
• Design and deploy applications on IIS with a focus on performance tuning and load balancing.
• Collaborate with business stakeholders to gather, analyze, and refine requirements.
• Translate business needs into functional and technical specifications.
• Perform impact analysis, scoping, and solution design.
• Troubleshoot application issues, conduct root cause analysis, and implement fixes.
• Optimize performance of code, database queries, and application behavior.
• Develop and integrate with SQL Server: tables, stored procedures, functions, views, and PLSQL where required.
• Integrate systems with third-party APIs and services including TCP/IP and WebSocket-based communication.
• Conduct code reviews and provide technical mentorship to other developers.
• Lead planning and estimation sessions, and ensure timely delivery of tasks.
• Work with version control systems (e.g., Git) and collaborative development workflows.
• Collaborate with infrastructure and DevOps teams to ensure smooth deployments and environment readiness.
• Work closely with QA for testing, validation, and bug fixing.
• Engage in ongoing reporting, system monitoring, and tuning activities.
• Participate in business meetings, requirement workshops, and sprint planning sessions.
• Ensure security best practices are followed in application design and implementation.
• Stay up to date on industry trends, emerging technologies, and recommend improvements to existing systems.
• Experience or exposure to telecom systems and protocols is considered a strong plus.
• Perform tasks as requested.

Qualifications and Experience

• Bachelor s Degree in relevant field ( Computer science, Programming)
• 5+ years of hands‑on experience with .NET (C#), including desktop applications, Windows services, and ASP.NET.
• Telecom industry experience is a plus.
• Strong experience with console applications, libraries (DLLs), and service‑oriented architectures.
• In‑depth experience with WCF and RESTful services.
• Experience designing load‑balanced, fault‑tolerant, and high‑availability APIs.
• Experience with version control systems (e.g., Git) and collaborative development workflows.
• Experience gathering business requirements, performing impact analysis, and documenting design specs.
• Strong experience integrating third‑party services and protocols (e.g., TCP/IP, WebSockets).

Skills and Knowledge

• Solid knowledge of IIS configuration, hosting, troubleshooting, and tuning.
• Strong proficiency in Microsoft SQL Server: database design, indexing, stored procedures, PLSQL, and views.
• Proven ability to troubleshoot application, performance, and network‑related issues.
• Excellent communication skills and experience working directly with business users.
• Strong planning and organizational skills able to manage multiple tasks and meet deadlines.
• Understanding of security principles in .NET applications.
• Knowledge of reporting tools and performance diagnostics.

Desired Candidate Profile

• Bachelor s Degree in relevant field ( Computer science, Programming)
• 5+ years of hands‑on experience with .NET (C#), including desktop applications, Windows services, and ASP.NET.
• Telecom industry experience is a plus.
• Strong experience with console applications, libraries (DLLs), and service‑oriented architectures.
• In‑depth experience with WCF and RESTful services.
• Experience designing load‑balanced, fault‑tolerant, and high‑availability APIs.
• Experience with version control systems (e.g., Git) and collaborative development workflows.
• Experience gathering business requirements, performing impact analysis, and documenting design specs.
• Strong experience integrating third‑party services and protocols (e.g., TCP/IP, WebSockets).
• Solid knowledge of IIS configuration, hosting, troubleshooting, and tuning.
• Strong proficiency in Microsoft SQL Server: database design, indexing, stored procedures, PLSQL, and views.
• Proven ability to troubleshoot application, performance, and network‑related issues.
• Excellent communication skills and experience working directly with business users.
• Strong planning and organizational skills able to manage multiple tasks and meet deadlines.
• Understanding of security principles in .NET applications.
• Knowledge of reporting tools and performance diagnostics.