Demo

Junior Software Engineer

onceLabs LLC
Chicago, IL Full Time
POSTED ON 4/8/2025
AVAILABLE BEFORE 8/5/2025
Junior Software Engineer (Full-Stack & Mobile Development)


As a Junior Software Engineer, you will work on a variety of projects spanning full-stack development and mobile application development for both Android and iOS. You will also have the opportunity to work with Cloud platforms such as AWS IoT, contributing to both backend services and frontend development.

We are looking for individuals who are passionate about learning new skills and taking on challenges. As a growing company, we need team members who can adapt quickly, jump into projects as needed, and rapidly gain proficiency in new concepts.


Responsibilities:
  • Full-Stack Development: Contribute to both frontend and backend development of web-based applications, APIs, and cloud services.
  • Mobile Development:
  • Develop and maintain native iOS applications and frameworks focused on wireless connectivity and control using Swift.
  • Develop and maintain native Android applications and frameworks focused on wireless connectivity and control using Kotlin.
  • Backend & Cloud Services:
  • Work on cloud-based backend services using Java (Spring Boot), Node.js, or Python.
  • Develop and maintain RESTful APIs and WebSockets for real-time communication.
  • Implement database solutions (SQL and NoSQL) to support mobile and web applications.
  • Assist in configuring and managing AWS cloud infrastructure, including services such as AWS IoT, Lambda, DynamoDB, and API Gateway.
  • Assist in defining and implementing robust app architectures and complex user interfaces.
  • Participate in development planning, including creating schedules and defining development tasks and timelines.
  • Communicate and justify technical design decisions with management.
  • Collaborate with designers, engineers, and product managers to build innovative and scalable products.
  • Provide on-site training for VIP clients when required.
  • Have the opportunity to work outside of embedded and mobile if you have interest.


Qualifications:
  • Organized and detail-oriented with strong problem-solving skills.
  • Strong communication skills and ability to work in a team.
  • Proficiency with git and version control best practices.
  • Minimum 1-year experience working with either iOS or Android native application development (personal projects count).
  • Familiarity with common mobile development design patterns such as MVVM.
  • Experience with backend technologies such as Spring Boot, Node.js, or Python (preferred).
  • Familiarity with database technologies like PostgreSQL, MySQL, or MongoDB (preferred).
  • Experience with RESTful APIs, GraphQL, and WebSockets (preferred).
  • Understanding of offline storage, threading, and performance tuning (preferred).
  • Strong communication skills with an interest in mentoring and educating others.
  • Experience with Bluetooth Low Energy, Wi-Fi, Low Power Cellular, and other wireless technologies strongly desired but not required.
  • At least some embedded development experience is a plus.
  • Familiarity with test-driven development (TDD) and agile methodologies (a plus).
  • Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or related discipline is preferred, but equivalent experience will also be considered.


NOTES:

NO C2C CANDIDATES, DO NOT APPLY, WE WILL REJECT ALL C2C APPLICANTS

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