Senior Software Engineer: Cloud APIs & Scalable Systems

Auctane; Madrid; On-site; EUR 47,000 - 68,000; Full time

Benefits offered by this job

Private health insurance

Training budget up to €2000/year

Wellness programs

Job summary

Auctane, based in Madrid, is seeking a Senior Software Engineer to design, develop, and maintain complex software components aligned with business and technical requirements. You will own feature implementation, troubleshoot challenges, and collaborate with cross-functional teams to deliver scalable solutions.

You will contribute to architectural decisions, review code, and mentor junior engineers while advancing best practices, performance, and reliability of our cloud-based services.

Qualifications

• Experience in designing and developing advanced software systems.
• Proficiency in object-oriented programming concepts, algorithms, and data structures.
• Continuous focus on enhancing skills in software architecture design, and product development.
• Strong orientation toward task automation to save time and effort.
• Implementation of improvements and optimizations in daily operations.
• Planning and managing complex multi-system deployments without impacting client operations.
• Programming across multiple languages (C#, JavaScript, Java in plus).
• Experience with Agile methodologies and DevOps practices.
• Expertise in cloud infrastructure automation.
• Knowledge of design patterns.
• Fluency in English is required for this role.

Responsibilities

• Contribute to system architecture discussions and develop software components aligned with functional and non-functional requirements.
• Creating high-quality, maintainable code in accordance with company best practices and standards.
• Participate in software testing, debugging, and optimization to ensure performance, scalability, and reliability.
• Develop and maintain cloud-based APIs, microservices, and integrations as part of a collaborative engineering team.
• Support junior engineers through code reviews, pair programming, and sharing technical insights.
• Collaborate with the team to refine task prioritization and align work with project goals.
• Tackling complex problems requiring deep analysis and evaluation of diverse factors.
• Collaborating closely with other teams and departments, such as product teams to ensure solutions meet business and technical requirements.
• Communicate effectively with team members and external stakeholders to clarify requirements and share progress updates.
• Participate in technical discussions, advocate for improvements, and help resolve disagreements constructively.
• Providing timely, concise, and actionable feedback to team colleagues.
• Share knowledge through documentation, workshops, or informal team sessions.
• Assist in technical interviews to evaluate candidates for your team.
• Maintaining openness to communication with both local and external partners.
• Proactively learn new tools and practices (e.g., DevOps, cloud services) to expand technical expertise.

Skills

OOP concepts

Algorithms & DS

Software architecture

Automation

Agile

DevOps

Cloud automation

C# / .NET

English fluency

Tools

AWS

SQL

TypeScript

JavaScript

C# / .NET

Job description

Auctane, based in Madrid, is seeking a Senior Software Engineer to design, develop, and maintain complex software components aligned with business and technical requirements. You will own feature implementation, troubleshoot challenges, and collaborate with cross-functional teams to deliver scalable solutions.

You will contribute to architectural decisions, review code, and mentor junior engineers while advancing best practices, performance, and reliability of our cloud-based services.