Senior Systems & Security Engineer, Fintech

Optasia is a fully enabled B2B2X financial technology platform covering scoring, financial decisioning, disbursement and collection. We are committed to enabling financial inclusion for all. We are changing the world our way.

We are seeking for enthusiastic professionals, with energy, who are results driven and have can-do attitude, who want to be part of a team of likeminded individuals who are delivering solutions in an innovative and exciting environment.
As member of the Systems Engineering team in Optasia, you will be responsible for effective provisioning, installation/configuration, operation, and maintenance of systems hardware and software and related infrastructure. This individual participates in technical research and development to enable continuing innovation within the infrastructure. This individual ensures that system hardware, operating systems, software systems, and related procedures adhere to organizational values, enabling staff, volunteers, and Partners.

What you will do

• Lead the design, implementation, and optimization of complex systems and networks for scalability, security, and performance.
• Take ownership of system architecture decisions, guiding long-term infrastructure strategy and roadmaps.
• Act as a technical authority during critical incidents: diagnose, troubleshoot, and resolve complex production issues under pressure.
• Drive automation across infrastructure to eliminate manual tasks and improve reliability.
• Establish and enforce system hardening, compliance standards, and security best practices (NIST, CIS, OWASP).
• Mentor and support junior and mid-level engineers, fostering a culture of technical excellence.
• Partner with stakeholders to align infrastructure capabilities with business requirements.
• Evaluate and introduce new technologies that enhance system performance and resilience.

What you will bring

• 7+ years of proven experience as a Systems Engineer, Infrastructure Engineer, or similar senior-level role.
• BSc/MSc degree in Computer Science, Engineering or a related field will be considered a plus
• Deep expertise with Linux systems (performance tuning, security hardening, kernel-level troubleshooting).
• Strong experience with VMware virtualization (design, optimization, and troubleshooting at scale).
• Hands-on knowledge of automation tools (Ansible).
• Track record of building highly available and resilient infrastructures.
• Strong understanding of networking protocols, storage systems, and distributed architectures.
• Proficiency in incident management and root cause analysis of complex system failures.
• Excellent communication and leadership skills, with experience mentoring teams.
• Fluent English (both written and spoken).

Your key attributes

• Strong attention to detail
• Customer service orientation
• Excellent communication skills and team working mentality
• Comfortable with working in a fast-paced and creative environment
• Pro-activeness, accountability and results orientation
• Hard working attitude and willingness to commit on project
• Experience in working with secure code development guidelines and coding practices (i.e. OWASP, NIST)

Why you should apply

What we offer:

👟 Flexible remote working
💸 Competitive remuneration package
🏝 Extra day off on your birthday
💰 Performance-based bonus scheme
👩🏽‍⚕️ Comprehensive private healthcare insurance
📲 💻 All the tech gear you need to work smart

Optasia’s Perks:
🎌 Be a part of a multicultural working environment
🎯 Meet a very unique and promising business and industry
🌌 🌠 Gain insights for tomorrow market’s foreground
🎓 A solid career path within our working family is ready for you
📚 Continuous training and access to online training platforms
🥳 CSR activities and festive events within any possible occasion
🍜 Enjoy comfortable open space restaurant with varied meal options every day
🎾 🧘‍Wellbeing activities access such as free on-site yoga classes, plus available squash court on our premises

Optasia’s Values 🌟

#1 Drive to Thrive: Fully dedicated to evolving. We welcome all challenges and learning opportunities.
#2 Customer-First Mindset: We go above and beyond to meet our partners’ and clients’ expectations.
#3 Bridge the Gap: Knowledge is shared, information is exchanged and every opinion counts.
#4 Go-Getter Spirit: We are results oriented. We identify any shortcomings that hold us back and step up to do what’s needed.
#5 Together we will do it: We are committed to supporting one another and to understanding and respecting different perspectives, as we aim to reach our common goals.