Senior Application Developer- Full Stack

Are you interested in being part of an innovative team that supports Westinghouse's mission to provide clean energy solutions? At Westinghouse, we recognize that our employees are our most valuable asset and we seek to identify, attract and recruit the most qualified talent while recognizing and encouraging the value of diversity in the global workplace. 

The Senior Application Developer provides advanced software engineering expertise to develop, enhance, and support enterprise applications used across multiple Westinghouse departments. You will lead technical solution design, drives development standards, and ensure delivered solutions are secure, scalable, and maintainable.

You will partner with U.S.-based Application Developers, product owners, and team members to translate requirements into technical approaches and working software. We are looking for proficiency with Agile delivery, SDLC best practices, object-oriented design, HTTP standards, and full stack development (applications, databases, and servers).

In addition to hands-on development, the Senior Application Developer mentors junior developers and reviews code. The Senior Application Developer also improves CI/CD pipelines and identifies opportunities to reduce operational risk, improve performance, and increase overall product quality. We expect the Senior Developer to work with ambiguous requirements, to ask the right questions early, and to independently manage priorities and delivery commitments.

Responsibilities:

• Develop existing enterprise application(s) supported by the team, including troubleshooting, root-cause analysis, and performance tuning.

• Lead technical design and implementation for new applications and feature enhancements

• Drive requirements refinement with partners and maintain user stories, acceptance criteria, and technical tasks via Azure DevOps

• Ensure application support activities meet SLA targets, including on-call support, incident response, and continuous improvement of operational runbooks

• Define and promote development standards (coding, testing, security, documentation) and mentor junior developers through pairing, code reviews, and technical guidance

• Follow and help improve Westinghouse standards and controls within your responsibilities, including secure development practices, change management, and audit/compliance requirements.

Qualifications:

• Bachelor's Degree in Information Technology, Computer Science or equivalent.

• 5+ years of relevant experience

• Full stack development experience (web UI, APIs, databases)

• Experience with Microsoft SQL Server (MSSQL), including schema design, performance tuning, and query optimization

• Expertise with C# and .NET 8+ ASP.NET(Core) for building and maintaining web applications and APIs

• Experience building front-end applications with Angular 20+

• Hands-on experience with Azure DevOps (Boards, Repos, Pipelines) for CI/CD and release management

• Familiarity with IIS and deploying/supporting web applications in IIS (configuration, bindings, certificates, and troubleshooting)Ability to lead technical design discussions, perform code reviews, and mentor other developers

• Strong analytical and troubleshooting skills; able to lead root-cause analysis and implement preventative fixes

• Experience in work directly with business stakeholders

• Commitment to secure development practices and high-quality delivery

• Fluency in written and spoken English

• Availability to work 2 days per week in Krakow office

We are committed to transparency and equity in all of our people practices. The base salary range for this position, which is dependent upon experience, qualifications and skills, is estimated to be 11,416 to 14,266 PLN gross per month.

In addition to the base pay, this role may be eligible for incentive pay based on company and individual performance.

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Why Westinghouse?

Westinghouse Electric Company is the global nuclear energy industry's first choice for safe, clean, and efficient energy solutions. We enable our delivery of this vision by living our value system: 

• Safety and Quality 
• Integrity and Trust 
• Customer Focus and Innovation 
• Speed and Passion to Win 
• Teamwork and Accountability 

Westinghouse offers great benefits to all our employees around the globe to keep them healthy and enhance their well-being.  

Benefits offered in Poland include:

• Stable employment
• Outstanding and supportive atmosphere of collaboration in the team and in Westinghouse group
• Attractive remuneration with bonuses
• Hybrid model of work, flexible working time
• MyBenefit Cafeteria
• Life insurance
• Private Medical Care
• Private Group Insurance
• Employee Assistance Program: confidential counseling and resources for employees, eligible dependents, and household members
• Charity initiatives
• Parking space for employees
• Employee referral program

You can learn more about Westinghouse by visiting http://www.westinghousenuclear.com. 

Westinghouse is an Equal Opportunity Employer including Veterans and Individuals with Disabilities.

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