Full Stack Engineer

Senior Full-Stack Engineer

Location: Remote (UK-based)

Company: PubX.ai, AdTech, PubTech

Type: Full-Time | Permanent

Tech: Python/Django, JavaScript/TypeScript, Kafka, ML, AWS

Salary: Competitive, with equity options

About Us

At PubX.ai, we're revolutionizing the digital advertising landscape by leveraging cutting-edge Machine Learning, AI and Automation technologies. Our mission is to empower digital publishers with intelligent monetization tools that optimize ad revenue and enhance user experience. As the industry shifts towards AI-driven solutions, we're at the forefront, developing platforms that automate and personalize advertising at scale.

Your Role

We're seeking a seasoned Senior Full-Stack Engineer to join our fully-remote global team. You'll play a pivotal role in designing, developing, and deploying scalable web applications, data pipelines, and APIs that integrate or report on advanced machine learning models. Collaborating closely with cross-functional teams, you'll help shape the future of ad tech through pub tech by building systems that are both robust and innovative.

Responsibilities

• Architect and develop end-to-end web and data applications and APIs using modern frameworks and technologies.
• Collaborate with data scientists and product managers to translate business requirements into technical solutions.
• Support and collaborate closely with the operations team to ensure system reliability, observability, and streamlined deployments and scalability.
• Implement best practices in code quality, testing, and deployment processes.

Requirements

Technical Skills:

• Expertise with the programming languages: Python, JavaScript/TypeScript
• Proficiency in modern web frameworks (e.g., React, Next.js), backend technologies like Django, FastAPI, NodeJS.
• Understanding of database systems, both SQL (PostgreSQL) and NoSQL (i.e. DynamoDB).
• Understanding of system components like Kafka, Redis, Schedulers etc.
• Experience with cloud platforms (e.g., AWS, GCP) and serverless architectures i.e. AWS lambdas, EC2, SQS, S3, Step Functions.
• Familiarity with DevOps practices, including infrastructure as code (AWS CloudFormation / CDK, Terraform), monitoring/logging (e.g., Prometheus, Grafana), and CI/CD tools (e.g., GitHub Actions, GitLab CI, CircleCI)
• Knowledge of integrating and deploying machine learning models in web applications is a plus.
• Bonus: Experience with AdTech concepts such as real-time bidding (RTB), header bidding, DSPs/SSPs, GAM, OpenRTB, or consent management platforms (CMPs).

Soft Skills:

• Excellent communication skills, with the ability to convey complex technical concepts to non-technical stakeholders.
• Strong problem-solving abilities and attention to detail.
• Proactive and self-motivated, with a passion for continuous learning.

Interview Process

We value your time and aim for a transparent, respectful, and efficient process. Our interviews are designed to evaluate both technical excellence and team culture fit, with real-world problems, not puzzles.

CV & Profile Review

• We assess your experience, skills, and potential fit based on your CV, portfolio, GitHub, or any relevant projects.

Initial Chat (30 mins)

• An informal conversation with our hiring manager to discuss your background, career goals, and to introduce PubX.ai, including culture, mission, and what we're building.

Technical Deep Dive & Team Fit (45 mins)

• A collaborative conversation with our engineers focused on architectural thinking, problem-solving approaches, and design decisions. Think whiteboarding, systems design, or scaling strategies, no trick questions. We focus on how you collaborate, communicate, and align with our values and working style.

Live Coding Session (45 mins)

• A practical coding session in your preferred language using tools like Codesandbox, Cursor, or your local environment. Expect a real-world ad tech scenario rather than algorithm tests.

Final Chat & Offer Discussion

• If successful, we’ll wrap up with a final conversation to answer your questions, discuss the offer, and set expectations for onboarding.

What We Offer

• Competitive salary with performance-based bonuses.
• Flexible working hours and remote work opportunities.
• Professional development budget for courses, conferences, and certifications.
• Collaborative and inclusive company culture that values innovation and creativity.

Industry Trends We're Embracing

• AI-Driven Advertising: Leveraging AI to automate and personalize ad creation and targeting, following trends set by industry leaders.
• Generative AI for Development: Embracing tools like Cursor, Code Rabbit, and ChatGPT to accelerate development, streamline code generation, code reviews and enhance productivity.
• Agentic AI Systems: Exploring autonomous agents capable of decision-making and workflow orchestration across systems, advancing toward intelligent, self-operating platforms.
• Privacy-First Solutions: Implementing ID-free audience targeting to align with evolving privacy regulations.
• Modern Development Practices: Adopting serverless architectures and edge computing to enhance application performance and scalability.

Ready to shape the future of ad tech through pub tech with us?

Apply now and be part of a team that's redefining the digital advertising ecosystem.

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