Senior Full Stack Software Engineer

**Senior Full-stack Software Engineer**
Remote / Hybrid / On Site (Gouna, Red Sea, Egypt)

Kalakso is hiring **Senior**Full-stack Software Engineers for a global AdTech Digital Out Of Home (DOOH) company primarily focused on physical convenience and grocery retailers. We enable retailers to enroll their media inventory into our Retail Media Network, and we make it easy for brand advertisers to publish their marketing campaigns.

**The problem we’re solving**

Digital retailers use data to study shoppers’ online behavior, predict their needs, and eliminate any friction points in the decision-making process. As a result, they provide shopping journeys that are very low on cognitive stress and therefore high on conversions/revenue. The problem is that digital-born retailers are moving to the offline world to increase their market share, and physical retailers are lacking the technology to compete with the complex data models digital ones have.

**Our Vision**
Our vision is to make physical spaces as intelligent and engaging as digital ones.
**Our Mission**
Our mission is to harness the power of data, AI, and Machine Learning by instantly and intelligently delivering highly engaging, personalized, and profitable in-store experiences.

**Our Values**
- Proactive: We don’t wait to be told what to do.
- Rational: We execute on well-researched ideas.
- Resilient: We simply don’t give up and are determined to succeed.
- Diverse: Our differences make us stronger as a group, and we love that.
- Social: We work hard and take time to celebrate success.

**Job Purpose**

We are looking for a highly skilled** Senior full-stack software Engineer.** You will work with product owners and other experienced software engineers to define software requirements and participate in operational and technical projects. In this role, you should be able to work independently while seeking the supervision and guidance of your superior. You should have excellent organizational and problem-solving skills. Your goals will be to develop high-quality software that is aligned with user needs and business goals.

**Responsibilities**:

- Software Development
- Develop, maintain, and enhance high-quality software solutions under guidance from senior engineers.
- Write clean, maintainable, and tested code following team standards and best practices.
- System Design & Architecture
- Contribute to the design and implementation of features and components.
- Follow established architectural patterns to ensure maintainability and scalability.
- Code Review & Mentorship
- Conduct code reviews to learn and provide constructive feedback.
- Support junior engineers and interns with guidance on coding practices and

problem-solving.
- Collaboration & Agile Practices
- Collaborate with cross-functional teams (Product, Design, QA) to deliver assigned tasks.
- Actively participate in Agile ceremonies such as sprint planning, stand-ups, and retrospectives.
- Troubleshooting & Optimization
- Identify and fix bugs or performance issues in the software.
- Technical Improvement & Learning
- Suggest minor improvements to code, processes, and workflows.
- Stay updated with relevant technologies and adopt best practices under supervision.
- Testing & Validation
- Write unit and integration tests for assigned features.
- Ensure solutions meet functional and non-functional requirements.
- Documentation & Knowledge Sharing
- Document implemented features, APIs, and processes for internal use.
- Share learnings and knowledge within the team to support collaborative growth.

**KPIs**

Code Quality & Maintainability
- Defect density: Number of bugs/defects per 1,000 lines of code (target threshold set

per team.
- Percentage of code reviews approved without major revisions.

Delivery & Productivity
- Percentage of assigned tasks completed on time per sprint.
- Number of pull requests merged per sprint (weighted by complexity).

Collaboration & Knowledge Sharing
- Participation in code reviews, design discussions, and team meetings.
- Contributions to internal documentation, technical guides, or knowledge-sharing sessions.

Learning & Growth
- Progress on skill development and adoption of best practices.
- Ability to take on increasingly complex tasks over time with mínimal guidance.

**Skills & Experience**
- Proven Software Engineering Experience, more than 5 years of hands-on experience building scalable and maintainable software.
- Backend Development
- Good Knowledge in Python or Node.js, or Go; experience with stateful/stateless services and microservices.
- Good Knowledge with any Node.js framework: NestJS, Express.js, Fastify
- Frontend Development
- Proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3, Angular, React, or Vue.js.
- Understanding of state management and maintainable front-end architectures.
- APIs & Integration
- Experience designing and developing RESTful APIs and GraphQL services.
- Databases & Data Management
- Experience with SQL (PostgreSQL