Senior Fullstack Engineer for Foundation group

About the role

Platform Stewardship Role in Prague

This position centers on the structural integrity of the Apify ecosystem. You will be responsible for the foundational layers that allow web data platforms to function reliably at scale. The role demands a focus on durability, performance, and the orchestration of complex distributed systems. Success is measured by the stability of the pipelines and the efficiency of the execution environment.

The position is based in our Prague offices. The successful candidate will work alongside a tight-knit group of engineers dedicated to the core infrastructure. Your contributions will directly shape how thousands of users interact with critical backend services.

Core Responsibilities

The position involves managing the lifecycle of data processing workflows. You will design the channels that transport information from source to execution environment. This includes ensuring that data moves efficiently through the system without bottlenecks or data loss.

You will build the layers that transform raw input into structured output. This involves selecting the right technologies for the frontend and the server-side logic. The goal is to create interfaces that are both powerful for operators and robust under heavy load.

Maintaining the execution landscape is a key duty. You will oversee the systems that schedule and run tasks across distributed nodes. This involves managing resources to ensure that high-priority workflows receive the necessary compute capacity.

Reliability extends to the network layer. You will be involved in the technologies that allow Apify to interact with the public internet. This includes managing the routing and access mechanisms that prevent disruptions due to network restrictions.

The public interface of the platform is also within scope. You will help maintain the contracts that external systems and developers rely on. This includes the frameworks that power the API and the administrative console.

Finally, you will manage the storage substrates. This involves the systems that hold the results of every execution. You will ensure that users can access their data while maintaining strict security and privacy standards.

Professional Profile

The ideal candidate brings a history of delivering complex software projects. You should have a background that spans both frontend and backend development. A proven ability to debug intricate systems is essential.

Experience with modern web interfaces is required. You should be proficient in building reactive user experiences using contemporary frameworks. Knowledge of server-side architectures is equally important.

An interest in security and access control is vital. You should understand the principles of secure authentication and authorization. Familiarity with conversational AI systems is considered a significant advantage.

You must thrive in a collaborative setting. The ability to communicate technical concepts clearly is non-negotiable. A mindset focused on experimentation and process improvement is expected.

Technology Stack

The infrastructure relies on a diverse set of technologies. Compute resources are provisioned and managed across a variety of platforms. The architecture depends on container orchestration and serverless patterns. Configuration management is handled through code-based approaches. Data is stored in multiple specialized databases.

The monitoring layer is extensive. It relies on industry-standard tools for visibility into performance and health. The frontend stack is built for scale and consistency. The backend is designed to handle asynchronous workloads efficiently.

The team utilizes standard developer tools for collaboration. The workflow is centered around rapid iteration and continuous delivery. You are expected to use these tools to their full potential.

What you'll do

• Architect and maintain the foundational platform components that enable scalable web data operations.
• Design and implement robust data channels that ensure efficient and lossless information transport across the system.
• Develop and refine the transformation layers that convert raw inputs into structured and actionable output formats.
• Build intuitive interfaces that provide operators with powerful capabilities while ensuring resilience under extreme load conditions.
• Oversee the execution landscape to guarantee optimal resource allocation for high-priority workflows and critical processes.
• Implement and manage network-level technologies that facilitate seamless interaction with public internet infrastructure and circumvent access restrictions.
• Maintain the public API contracts and administrative console to ensure compatibility for external systems and developer integrations.
• Administer the storage substrates that house execution results while enforcing strict security and privacy protocols.
• Collaborate closely with cross-functional teams to define system requirements and align on long-term architectural vision.
• Troubleshoot complex issues across the full stack to identify root causes and deliver stable, high-performance solutions.
• Contribute to the improvement of development workflows and operational procedures to enhance reliability and delivery speed.
• Mentor junior engineers by providing guidance on best practices for fullstack development and system design.
• Evaluate and adopt new technologies that improve the efficiency and maintainability of the platform.
• Ensure all components meet rigorous quality standards through testing and code review processes.
• Drive initiatives to optimize system performance, scalability, and security across the foundation group.
• Document architectural decisions and system behaviors to support long-term maintenance and knowledge transfer.
• Participate in on-call rotations to address critical incidents and support production environments.
• Engage with the community to gather feedback and translate requirements into technical solutions.

Requirements

The candidate must possess a strong background in computer science fundamentals and enterprise software development. A minimum of eight years of professional experience in software engineering is mandatory. Demonstrated expertise in both frontend and backend technologies is a strict requirement for this position. Proficiency in modern JavaScript frameworks and server-side programming languages is essential.

Experience with containerization and orchestration platforms such as Kubernetes is required. Deep understanding of distributed systems and network protocols is non-negotiable. The candidate must have a proven track record of building and maintaining high-availability systems. Familiarity with infrastructure as code methodologies is essential for success in this role.

A strong grasp of database systems and data modeling is necessary to manage storage substrates effectively. Knowledge of security best practices and access control mechanisms is vital. The ability to read and interpret technical documentation quickly is a hard requirement.

The candidate must be comfortable working in a fast-paced, agile environment. Excellent problem-solving skills and a meticulous attention to detail are mandatory. Strong written and verbal communication skills are required to collaborate with international teams.

Nice to have

Familiarity with AI and machine learning workflows is considered a significant advantage. Experience with monitoring and observability tools is preferred.

Practical notes

This is a full-time position based in Prague. The candidate must be eligible to work in the Czech Republic without visa sponsorship. Relocation assistance is not available for this role.