Req ID: 138657
Remote Position: Hybrid
Region: Europe
Country: Romania
State/Province: Oradea
City: Oradea
As an experienced .NET Software Engineer, you will actively contribute to the technical transition, modernization and rewrite of our core enterprise applications from legacy systems to .NET. Operating within a collaborative, multi-disciplinary development team, you will participate in the end-to-end software development lifecycle (SDLC) to implement a modern, scalable .NET architecture. In this role, you will combine strong hands-on technical execution with close team collaboration, working alongside senior engineers, business analysts and architects to establish engineering best practices and ensure overall software excellence.
Contract Duration: Full-Time (2-Year Limited Term with a strong possibility of extension or transition to an indefinite contract)
Full professional level; applies software engineering expertise in a specific area of specialization. Work is performed within established professional standards, technical guidelines and project objectives. Works on problems of moderate to diverse scope where analysis of technical requirements, system architectures and data schemas requires evaluation of identifiable factors. Exercises technical judgment within defined procedures and software development practices to determine appropriate action. Receives general instructions on routine development tasks and detailed instructions on new projects or complex system assignments. Builds productive collaborative relationships across development, QA and business analyst teams.
Performs tasks such as, but not limited to, the following:
● Contribute actively to the software design and end-to-end delivery of scalable enterprise web applications using ASP.NET Core MVC and .NET 10, collaborating with senior engineers and the dedicated architect to implement robust technical solutions.
● Support the modernization and rewrite process, migrating legacy Java and Java ADF application functionalities into a high-performance .NET architecture while ensuring functional parity.
● Balance legacy modernization with new features enablement, designing and building brand-new product capabilities from scratch to deliver strategic business value.
● Collaborate with senior engineers and the dedicated architect to implement robust architectural foundations, design RESTful APIs and optimize data flows integrated with Oracle DB.
● Deliver clean, maintainable and scalable code by strictly adhering to SOLID principles and Clean Code practices.
● Manage modern development workflows in GitLab, utilizing standardized branching strategies, merge request processes and CI/CD practices.
● Work closely within a collaborative team environment, actively sharing knowledge on modern .NET development, participating in peer code reviews and contributing to a culture of continuous learning.
● Ensure application reliability and stability by defining and implementing code testing standards, structured debugging and proactive performance optimization.
● Proactively identify and resolve technical debt, modernize user interfaces and enhance application stability, security and performance.
● Collaborate with IT/Business partners, leadership and global stakeholders to translate business requirements into clear technical specifications.
● Maintain comprehensive technical documentation for architectural designs, system configurations and database schemas to ensure long-term maintainability.
University degree in one of the following: Computer Science, Information Technology, Information Systems or a related technical field.
This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.
Celestica is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against on any protected status (including race, religion, national origin, gender, sexual orientation, age, marital status, veteran or disability status or other characteristics protected by law).
At Celestica we are committed to fostering an inclusive, accessible environment, where all employees and customers feel valued, respected and supported. Special arrangements can be made for candidates who need it throughout the hiring process. Please indicate your needs and we will work with you to meet them.
Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high-growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.
Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):
ATS: This segment serves customers in complex, regulated and high-reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.
CCS: This segment focuses on high-performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI-driven growth.
Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast-changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.
Celestica would like to thank all applicants, however, only qualified applicants will be contacted.
Celestica does not accept unsolicited resumes from recruitment agencies or fee based recruitment services.

Celestica enables the world's best brands. Through our unrivaled customer-centric approach, we partner with leading companies in aerospace and defense, communications, enterprise, healthtech, industrial, capital equipment, and smart energy to deliver solutions for their most complex challenges. A leader in design, manufacturing, hardware platform and supply chain solutions, Celestica brings global expertise and insight at every stage of product development - from the drawing board to full-scale production and after-market services. With talented teams across North America, Europe and Asia, we imagine, develop and deliver a better future with our customers.
We operate in more than 40 locations globally. Consult our website for detailed location information. https://www.celestica.com/about-us/locations