Junior Software Engineer

Financial technology is a high-growth industry as change and innovation continue to disrupt the status-quo and prompt major transformation. Arcesium is at a particularly interesting time in our own growth as we look to leverage our successfully established market position and expand operations in pursuit of strategic new business opportunities. We value intellectual curiosity, proactive ownership, and collaboration with colleagues, and we empower you to meaningfully contribute from day one and accelerate your professional development.

This is a role for someone early in their career who wants both hands-on IT and real software/infrastructure engineering experience. As part of a small, high-trust local team, you'll be the go-to person in the Lisbon office for day-to-day IT support - onboarding new hires, setting up hardware, keeping meeting rooms and workstations running - while also picking up real engineering work: automation scripting, CI/CD pipelines, and AWS infrastructure support alongside a distributed engineering team. You'll learn fast, work directly with senior engineers, and grow from executing well-defined tasks into owning small pieces of infrastructure independently.

• Be the local IT point of contact for the Lisbon office - onboarding, hardware, and everyday support.
• Learn and apply core SRE practices - scripting, CI/CD, and cloud infrastructure - under the guidance of senior engineers.
• Split your time between hands-on specialist work and hands-on engineering work; grow into more of the latter over time.
• Build a foundation in Linux, AWS, and automation that sets up a long-term engineering career path.

Measured by growth and reliability, not tenure - within 6-12 months

• →Own IT specialist duties for the Lisbon office: Handle new-hire onboarding end to end - hardware provisioning, account setup, workstation configuration, and welcome/orientation support - so new colleagues are productive from day one.
• →Keep the local office running: Support workstations, conference rooms, and A/V equipment; manage local IT inventory and procurement; act as the first point of contact when something in the office isn't working.
• →Provide day-to-day technical support: Troubleshoot common issues - login problems, device setup, network connectivity, basic Linux/Windows/macOS issues - and know when to escalate to the broader distributed team.
• →Learn and contribute to automation: Write and maintain simple scripts and Ansible playbooks under guidance to reduce repetitive manual work; progressively take on larger pieces of automation as your skills grow.
• →Support CI/CD and cloud infrastructure: Get hands-on with GitLab pipelines and AWS building blocks (IAM, EC2, basic networking) by shadowing and then assisting senior engineers on real infrastructure tasks.
• →Build strong fundamentals: Develop working knowledge of Linux systems administration, version control, and cloud basics through real tickets and projects, not just documentation.
• →Document and communicate clearly: Keep clear records of issues and fixes so recurring problems get solved once, not repeatedly; communicate status and blockers proactively to the wider (mostly remote) team.

• Experience: 0-2 years in an IT support, systems administration, or junior engineering role (internships and academic projects count). 
• Linux fundamentals: Comfortable in a Linux/Unix environment - command line, file permissions, basic networking, and troubleshooting common issues.
• Scripting: Working knowledge of at least one scripting language (Python, Bash, or similar) and eagerness to write more of it.
• IT support mindset: Comfortable being hands-on with hardware and being the local face of IT - patient, clear communicator, good with people who aren't technical.
• Cloud curiosity: Basic familiarity with a cloud platform (AWS preferred) and genuine interest in learning infrastructure and automation - formal production experience not required.
• Ownership and reliability: Able to work independently as the only (or one of very few) on-site technical resource, while staying closely connected to a distributed, remote-first team.
• Language: Fluent English (written and spoken); Portuguese is a plus for local vendor and office coordination.
• Education: Bachelor's degree in Computer Science, Engineering, IT, or a related field; equivalent practical experience considered.

• Exposure to configuration management tools (Ansible, Puppet, Chef).
• Familiarity with Git and CI/CD concepts (GitLab CI, GitHub Actions, or similar).
• Coursework, certifications, or personal projects involving AWS (Cloud Practitioner or higher).
• Prior experience in a hardware/device support or IT helpdesk role.