Junior Software Developer

Citisense; Greater London; On-site; NOK 444,000 - 570,000; Full time

Job summary

Citisense is seeking a Junior Software Developer to join our team. You will work across the MERN stack (React, Node), Python backends, and databases to deliver real‑world applications that meet customer needs.

The role covers frontend, backend, and cloud aspects, with hands‑on ML exposure for object detection and deployment, plus practical AWS basics. Collaborate with cross‑functional teams to write clean, scalable, and maintainable code, and contribute to evolving features from design through

Qualifications

• 1–2 years of software development experience
• Hands-on experience with MERN stack
• Experience with Python web frameworks
• Knowledge of relational and NoSQL databases
• Exposure to ML deployment is a plus
• Basic familiarity with AWS or cloud services

Responsibilities

• Develop and maintain web applications using React.js (frontend) and Node.js (backend).
• Build and integrate backend services and APIs using Python with a web framework (e.g. Django, Flask, or FastAPI).
• Design, query, and manage relational and NoSQL databases (PostgreSQL, SQL, MongoDB).
• Work on ML tasks including object detection, model training, and deployment.
• Deploy and manage applications using basic AWS cloud services.
• Collaborate with cross-functional teams to deliver clean, scalable, and maintainable code.

Skills

MERN stack

Full stack development

Python backend

ML exposure

AWS basics

Tools

React.js

Node.js

Python (Django/Flask/FastAPI)

PostgreSQL

SQL

MongoDB

Job description

About the role

We're looking for a Junior Software Developer with hands-on experience across the MERN stack, Python, and databases, along with foundational exposure to machine learning and cloud platforms. The ideal candidate is comfortable working across the full stack and has practical (not just theoretical) experience applying ML in a real-world or industry setting.

Key responsibilities

• Develop and maintain web applications using React.js (frontend) and Node.js (backend).
• Build and integrate backend services and APIs using Python with a web framework (e.g. Django, Flask, or FastAPI).
• Design, query, and manage relational and NoSQL databases (PostgreSQL, SQL, MongoDB).
• Work on machine learning tasks including object detection, model training, and deployment.
• Deploy and manage applications using basic AWS cloud services.
• Collaborate with cross-functional teams to deliver clean, scalable, and maintainable code.

Required skills

• Frontend: React.js.
• Backend: Node.js, Python (with experience in at least one web framework).
• Databases: PostgreSQL, SQL, MongoDB.
• Machine learning: Practical/industrial experience with object detection, model training, and deployment (not just coursework or personal projects).
• Cloud: Basic working knowledge of AWS.

Nice to have

• Exposure to REST API design and integration.
• Familiarity with version control (Git).
• Understanding of basic DevOps or CI/CD concepts.

Role details

• Job title: Junior Software Developer
• Experience required: 1 to 2 years
• Salary: £35,000 to £45,000