What does the role of Java Backend Developer and Head of Secure Development involve?
The role of Java Backend Developer and Head of Secure Development primarily combines two areas of responsibility.
On the one hand, it involves building services and APIs that support the operation of our platforms and systems. This entails working with a wide variety of frameworks and libraries within the Java ecosystem, as well as with cloud environments and integration systems that must be robust, scalable and easy to maintain.
On the other hand, as a Security Development Lead, the focus is on ensuring that all software is built with a ‘security by design’ approach. This includes applying patterns and best practices that reduce risks at source, analysing threats, reviewing dependencies, automating security controls and defining hardening requirements throughout the development lifecycle. An essential part of the role is supporting the team and fostering a culture of security to minimise vulnerabilities at their root.
Ultimately, it is not just about developing features, but about ensuring the platform grows in a robust, sustainable and secure manner.
What are its main characteristics?
This role combines deep technical expertise with the responsibility of making security a cross-cutting pillar throughout development.
It requires a solid command of the Java ecosystem, from frameworks to development patterns, enabling the construction of efficient and reliable services. Added to this is a clear architectural vision, capable of understanding how all the pieces of the system fit together and how to ensure they behave correctly in production.
As a secure development lead, it is also key to foster a culture of secure development that integrates security into every phase, from definition through to deployment. This demands a preventive approach that allows risks to be anticipated and mitigated before they can turn into an actual incident. Quality, traceability and the ability to collaborate with QA, operations, product and security teams are part of day-to-day work to ensure that all processes move forward in alignment.
What professional profiles are involved in this?
This type of role typically falls to professionals with solid development experience who have worked on complex projects where security is a key factor. They are usually developers who, in addition to coding, understand the importance of applying secure practices at every stage and possess the technical judgement to make decisions that affect the software in the long term.
It is also common for them to come from environments where automation, traceability and security controls are a natural part of their daily work. Similarly, security engineers with development knowledge fit very well into this type of role, as they bring a preventive approach aimed at avoiding vulnerabilities at the root.
Generally, these are computer science or telecommunications engineering profiles with the ability to understand the full software lifecycle and who look beyond the code, always seeking to build systems that are secure by default.
What are the benefits of this profession?
One of the main benefits of this profession is the opportunity to constantly tackle technological challenges that keep interest and motivation constantly alive. Working as a Java Backend Developer and security development lead involves being exposed to a constantly evolving ecosystem, both in terms of frameworks, architectures and cloud services, and in the field of cybersecurity. This makes continuous learning a natural part of the job, and allows for professional growth whilst incorporating new practices, techniques and approaches that enrich the daily experience.
Furthermore, designing and building systems that are both scalable and secure has a direct impact on clients, the protection of their data and the robustness of operations. Knowing that technical decisions influence reliability, service continuity and product resilience brings great professional satisfaction. It is also a role that allows you to play an active part in strategic decisions that define the quality and evolution of the platform, providing a global view of the project and a level of responsibility that is highly stimulating.
Another key benefit is the ability to work across multiple teams, from security and QA to product and operations, which enriches the technical perspective and fosters the development of collaborative and communication skills. This constant interaction not only improves project outcomes but also helps to foster a culture of shared security, where every advance directly impacts the strength and value of the software.
What challenges do you face?
One of the main challenges of this role is designing distributed systems that are truly resilient and capable of operating under high-load scenarios or in the face of unexpected component failures. The complexity of today’s environments, coupled with the need to provide always-available services, requires anticipating anomalous behaviour and building architectures capable of recovering autonomously or in a controlled manner. Added to this is the rapid pace at which technology evolves, making it necessary to adapt systems to new realities, new tools and both technical and business expectations.
Furthermore, taking responsibility for secure development involves integrating security from the outset, rather than as a subsequent addition. This involves identifying potential threats, applying appropriate controls and taking into account particularly sensitive aspects of the project from the design stage, such as the handling of critical data or compliance with specific regulations. It also requires constant monitoring of dependencies, versions, libraries and configurations, as any change can lead to a breach if not properly assessed.
An additional challenge arises when several teams are working on the same architecture. In such cases, it is essential to ensure a shared vision of the system, establish common standards and encourage all teams to apply the same security and quality practices. Coordination, communication and technical alignment thus become essential elements in preventing deviations that could compromise the stability or security of the project.
Taken together, these challenges mean that the role requires a constant blend of adaptability, a global perspective and a commitment to security, ensuring that systems not only function well, but do so in a robust and secure manner.
How does the development of new technologies affect you?
The impact of new technologies on this role is profound and constant, particularly as both development and security evolve at a rapid pace.
Artificial intelligence is transforming the way we work, as AI-assisted development significantly increases productivity and facilitates tasks that previously took a long time, such as code generation, static analysis or early error detection. However, this acceleration also implies a shift in the working paradigm, forcing us to strengthen review processes, ensure the quality of the generated code, and maintain stricter control over the technical consistency and security of the software.
Furthermore, AI is not only used to support development but also to strengthen system security. AI-based tools enable automated vulnerability analysis, the detection of anomalous behaviour in production, and the identification of patterns that could predict incidents. These capabilities broaden the scope of the secure development lead’s remit and facilitate a faster and more effective response to potential threats.
Another key aspect is the evolution of security standards driven by emerging technologies, such as quantum computing. The possibility that current cryptographic systems may be compromised in the future necessitates preparing security protocols for post-quantum scenarios, introducing a new layer of complexity into application architecture and day-to-day technical decisions. At Telefónica Tech, we address this challenge through an approach based on crypto-inventory and crypto-agility, which enables us to identify and manage the cryptographic algorithms in use and update them quickly and in a controlled manner in the face of new threats or regulatory requirements. We also promote hybrid cryptography, combining traditional and post-quantum algorithms to ensure a gradual and resilient transition towards quantum-safe environments.
Finally, the constant advancement of technologies also brings new threats. Every new tool, framework or architectural pattern opens up opportunities, but also risks that must be carefully assessed from the design phase onwards. This requires staying constantly up to date, understanding the technical and security implications of every change, and ensuring that all decisions are integrated into a coherent secure development strategy.
In short, as technology evolves, so does the responsibility to ensure that everything we build is not only functional and efficient, but also secure by default.
