| Roll | Senior Ingenjör – Forskning & Utveckling | 
| Kompetensområde | Tekniskt arbete | 
| Startdatum | 2026-01-15 | 
| Slutdatum | 2027-01-14 | 
| Omfattning | 100% | 
| Ort | Västerås | 
| Land | Sweden | 
| Sista svarsdatum | 2025-11-14 (Offerter kommer att behandlas löpande) | 
| Kontaktperson | Anette Svensson (hitachi@keyman.se | 073-091 19 23) | 
| Referensnummer | #14231 | 
Övergripande uppdragsbeskrivning
Additional Hiring Information for Supplier	
Senior Full Stack Developer
We are seeking an experienced Senior Full Stack Developer who will be instrumental in shaping our digital IoT platform and mentoring our development team in modern software practices and architectural excellence.
Our R&D engineers and scientists develop breakthrough technologies that change the way the world works, and industries do business. We constantly push the limits of convention, while retaining our focus on delivering quality products and solutions to our customers.
You will be working in an agile team setup in a Global Environment, with colleagues in Sweden cooperating with teams in Poland and India. You will report to the local department but also to the Global R&D functions for digital solutions in HVDC.
The team works in an agile way where all team members are expected to contribute with their knowledge and experiences to achieve the common goals for the development of the products. This means that the team does breakdown of activities together, collaborates within the team as well as seeks collaboration with other relevant teams in (and sometimes outside) the HVDC organization.
How You Will Make an Impact
- Contribute and lead parts of the architectural design and implementation of our digital platform, making key technical decisions for both backend and frontend solutions.
- Design, develop, and maintain scalable software systems that support analytics functions and asset monitoring solutions.
- Drive the implementation of modern DevOps practices and CI/CD pipelines to streamline development and deployment processes.
- Implement software solutions using .NET (including latest versions), React, and modern web technologies.
- Establish and enforce coding standards, conduct code reviews, and promote best practices across the development team.
- Coach and mentor other developers, sharing your expertise in full stack development and system design.
- Investigate and resolve complex software defects and performance issues.
- Collaborate with product owners, project managers, domain experts, and stakeholders to define technical solutions and prioritize features.
- Stay current with latest software development trends and technologies, introducing innovations that benefit the team.
- Work in a cross-disciplinary agile team, contributing to sprint planning, retrospectives, and continuous improvement initiatives.
Your Background
Required Qualifications:
- Bachelor’s degree or higher in Computer Science or equivalent field of study.
- 10+ years of experience in professional software development, with several years in senior or lead roles.
- Proven track record of leading technical implementations and making architectural decisions.
- Fluent in English and Swedish.
- Expert-level knowledge of C# and .NET ecosystem.
- Deep expertise in modern frontend development with React, including state management.
- Strong proficiency in TypeScript and JavaScript.
- Extensive experience with RDBMS concepts and implementations.
- Hands-on experience with ORM frameworks.
- Solid understanding of API design patterns.
- Experience with DevOps practices and tools.
- Knowledge of secure coding principles and security best practices.
- Experience with both Windows and Linux platforms.
- Familiarity with cloud platforms (Azure preferred).
- Experience with modern CSS frameworks.
- Knowledge of message queuing systems.
- Experience with real-time communication technologies.
- Understanding of microservices architecture and distributed systems.
- Experience building and maintaining component libraries and design systems.
- Familiarity with search technologies/databases.
- Knowledge of UI/UX principles and tools.
- Experience with database migration tools.
We are looking for a solution-oriented team player who thrives in collaborative environments where knowledge sharing and innovation are encouraged. You should be passionate about building sustainable, maintainable systems with focus on clean code and best practices.
NOTE:
- Interview via Teams.
- In office / Remote work: 51-49
- Swedish mandatory.
- Also, the person needs to be able to travel to the office.
Description:
R&D Software development consists of requirement management, software design, Design reviews and functional verification. Besides meeting the functional requirements non-functional requirements such as cost, quality and time target shall be met. Work processes and associated tools are provided and the expectation is that processes are followed and provided tools are used unless other agreements are made.
Tasks and qualifications required extended beyond Senior and Principal Engineer.
In addition, the below minimum requirements of education and experience:
• Well documented (10+ years) experience in relevant Engineering field.
• On a national level unique competence relevant to the special q qualifications and requirements for the assignment.
• Other factors which can qualify is a post-graduate degree (Doctor degree) in a relevant area or other documented credentials.
  
    
EXPLANATION ON LEVELS:
Levels with numbers (1-5): Increasing experience from 1=Very Junior up to 5=Very Experienced
Levels with letters (A-F): Increasing experience from F=Very Junior up to A=Very Experienced
 
Skallkrav
IMPORTANT Carefully read the full description of the role, requirements and specific qualifications wanted, areas of responsibility, background requested and additional employment information for the supplier to ensure that your set of competencies matches the role.
Expert-level knowledge of C# and .NET ecosystem.
Deep expertise in modern frontend development with React, including state management.
Strong proficiency in TypeScript and JavaScript.
Extensive experience with RDBMS concepts and implementations.
Hands-on experience with ORM frameworks.
Solid understanding of API design patterns.
Experience with DevOps practices and tools.
Knowledge of secure coding principles and security best practices.
Börkrav
Experience with modern CSS frameworks.
Knowledge of message queuing systems.
Experience with real-time communication technologies.
Understanding of microservices architecture and distributed systems.
Experience building and maintaining component libraries and design systems.
Familiarity with search technologies/databases.
Knowledge of UI/UX principles and tools.
Experience with database migration tools.
Övriga krav
Offer for this assignment must be sent via KeySourcingTool. Replies via email will receive limited feedback.
Please describe briefly in “Comments” for the various requirements how the consultant meets these.
The supplier hereby confirms that they are aware of feedback on Offers will primarily come via KeySourcingTool on the submitted offer (notification via e-mail from KST).
Personliga egenskaper
We are looking for a solution-oriented team player who thrives in collaborative environments where knowledge sharing and innovation are encouraged.
You should be passionate about building sustainable, maintainable systems with focus on clean code and best practices.
Övrig information
PLEASE NOTE: From the offered hourly rate, the contractual fee of 4.23% (MSP 2,13% + KeyMan 2,1%) will be deducted.
If we end up in a contract the consultant must undergo a drug test before the assignment can start. The consultant then also must have a certificate for SSG-Entré and sign a NDA.
In office / remote work WITHIN SWEDEN is possible 51 – 49 %.
For further details and conditions, see the attached documents.
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