Lead System Engineer

Reposted 24 Days Ago
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Brussels
In-Office
Expert/Leader
eCommerce • Fintech • Financial Services
The Role
Lead the AWS migration of the infrastructure, manage legacy systems, modernize tech stack, ensure compliance, mentor junior engineers, and document processes.
Summary Generated by Built In
WHY PAYNOVATE ?

Paynovate is a Belgium-based fintech with more than 80 employees. As a growing e-money institution, we are bringing payment solutions to the next level. We value ownership, leadership, and the ability to follow through in a context where impact is real and visible.


CONTEXT

We are in the middle of a major infrastructure evolution, moving from a traditional bare-metal environment to a modern and scalable AWS setup. The migration has started and key foundations are already in place.

We are looking for a hands-on technical leader to take this transformation further. This role sits at the core of one of our most strategic initiatives and combines deep technical involvement with technical leadership in a regulated fintech environment.
The infrastructure team currently consists of two engineers with 3 to 5 years of experience. As part of the team’s growth, we are strengthening the infrastructure function by recruiting both a Lead System Engineer and an additional System Engineer.

WHAT YOU'LL DO
  • Lead the AWS migration by designing, planning, and executing the move from on-premise and data center systems to AWS
  • Maintain and operate legacy systems until their migration to the cloud

  • Act as a hands-on engineer: architect, build, troubleshoot, and resolve complex infrastructure issues

  • Modernize the infrastructure stack using Infrastructure as Code (Terraform, Ansible), Docker, AWS services, and MySQL

  • Ensure infrastructure implementations comply with PCI-DSS and National Bank of Belgium requirements

  • Manage MySQL databases, including backup, recovery, security, performance tuning, and optimization

  • Mentor junior engineers and contribute to the growth of the infrastructure team

  • Collaborate closely with developers to design scalable, reliable, and secure systems, and communicate technical topics clearly to non-technical stakeholders

  • Troubleshoot software development infrastructure issues (build, deployment, test failures)

  • Help prioritize and follow up on infrastructure-related projects and coordinate with third-party providers

  • Participate in an on-call rotation (shared 24/7 support, approximately 1–2 times per month)

  • Maintain clear and structured technical documentation

WHAT YOU BRING
  • At least 10 years of experience in systems engineering
  • Strong AWS experience (at scale).
  • Solid expertise in Infrastructure as Code (Terraform, Ansible).
  • Strong Linux and Docker skills.
  • Proficiency in Bash scripting.
  • Good understanding of networking
  • Experience with both on-premise and cloud infrastructure.
  • MySQL database administration (performance, backup and restore)
  • Basic knowledge of HSMs.
  • Experience operating 24/7 production systems.
  • Demonstrated technical leadership skills, with the ability to coach and guide others
  • Strong problem-solving and analytical skills
  • Ability to communicate effiectively with both tech and non-technical audiences
  • Excellent communication skills with technical and non-technical audiences.
  • Proactive, organized, communicative and team-oriented mlindset
WHAT WE OFFER
  • A key technical role in a profitable and fast-growing fintech environment
  • Direct and tangible impact on a strategic infrastructure transformation

  • A collaborative team environment with room for growth and development

  • A modern working environment with a structured hybrid work policy

  • A competitive salary package including 32 days of holiday, mobility budget, meal vouchers, health and group insurance, phone, and homeworking allowance

Top Skills

Ansible
AWS
Bash
Docker
MySQL
Terraform
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The Company
HQ: Brussels
53 Employees
Year Founded: 2018

What We Do

Paynovate is a fully licensed Belgian e-money institution (EMI) that provides digital payment solutions for B2B businesses across all EEA member states and in the UK. It is a principal member for Visa, Mastercard and Bancontact-Payconiq.
Paynovate’s single platform processes all payments with services such as acquiring (POS and e-commerce), issuing and banking.
Paynovate is part of the Loyaltek Group and was founded in 2018.

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