Job Title: Senior Full Stack Engineer

Company Name: Castille

Job Url: https://castillians.zohorecruit.eu/jobs/careers/40783000035654274/Senior-FullStack-Engineering

Job Description: ob Description
This is a remote position.

Location: Remote
Engagement Type: Project-based Assignment; B2B Contract (Outside IR35)
Duration: 6 months with auto renew (Fractional basis)
Timezone: CET ± 2 hours


Be part of our Global Engineering Network!

One of our clients, a leader in the Telecommunications sector is looking for a skilled Fractional Full Stack Engineer to design and build a prototype system for connecting power devices with remote software. This project-based role requires a blend of technical expertise in modern web development and cloud infrastructure, with a focus on creating a scalable, secure connectivity solution.

Key Deliverables:
Design and develop a prototype web application for remote monitoring/management of power devices

Build both frontend (user interface) and backend (server, database, APIs) components

Implement secure communication protocols between power devices and cloud software

Develop real-time data visualization and device control interfaces

Set up and configure cloud hosting infrastructure (AWS/Azure/GCP)

Ensure system security, scalability, and reliability in the prototype design

Create documentation for architecture, APIs, and deployment processes

Collaborate with stakeholders to refine requirements and demonstrate progress



Requirements
Ideal Profile:
At least 5 years of experience in a similar role
Experience working with: 
Java Backend: Spring Boot, REST APIs, Microservices architecture
React Frontend: React.js, Redux/Context API, modern JavaScript (ES6+)
Experience with at least one major cloud provider (AWS, Azure, GCP)
Nice-to Have Skills
Previous IoT/device connectivity projects

Experience with power/energy sector applications


Why Partner with Us?

Clear scope with no ambiguity over deliverables.

Flexible working arrangements.

Opportunity for repeat engagements based on performance.



Selection Process 

Proposal Submission

Submit your professional profile/CV by applying on the role.

Business Alignment Call

30-min virtual discussion with Human Capital Consultant to review scope

Verification

Opportunity to complete Castille Vetting (background/compliance checks)

Client Skills Review

Direct interview with end client to discuss project specifics

Project-specific technical assessment (if required)

Ongoing Business Support

Access to CX guidance and market insights through our professional network.



I'm interested