Senior Software Engineer

Lisbon, Portugal (EU)senior

Software EngineerSoftware Engineering

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Quick Summary

Key Responsibilities

Drive architectural decisions: Design features for high-availability and scale, aiming for appropriate complexity ("as simple as possible, but no simpler").

Requirements Summary

You have 5+ years of experience building high-availability, high-transaction systems in production using Java and cloud-based solutions (preferably AWS).

Technical Tools

awsjavamentoring

WHO WE ARE

At Trustly, we're building a smarter, faster, and more secure financial future by revolutionizing the world of payments. As a global leader in Open Banking Payments, we are establishing Pay by Bank as the new standard at checkout, providing unparalleled freedom, speed, and ease to millions of consumers and merchants worldwide.

Our Ambition: To build the world’s most disruptive payment network and redefine what the payment experience should feel like.

Trustly is a global team of innovators, collaborators, and doers. If you are driven by a strong sense of purpose and thrive in a dynamic, entrepreneurial, and high-growth environment, join us and be part of a team that’s transforming the way the world pays.

ABOUT THE ROLE
To further strengthen our core backend services, we are looking for a product-minded Senior Software Engineer (Java). At this level, your biggest shift is moving from owning your personal work to owning team outcomes, and from following paths to creating them. You will act as a true technical partner to the business, actively contributing to the product vision and shaping the roadmap of our systems.

Responsibilities

~1 min read

→Drive architectural decisions: Design features for high-availability and scale, aiming for appropriate complexity ("as simple as possible, but no simpler"). You will ensure monitoring, logging, and graceful degradation are built in from the start, never as afterthoughts.
→Steer delivery & planning: Protect the team's focus by prioritizing finishing work over starting new tasks, and explicitly weigh cost versus value to identify where small investments unlock the most business value.
→Connect tech to business: Explain technical trade-offs to stakeholders in the terms they care about most: cost, time, risk, and capability.
→Multiply your impact: Lift the skills of those around you by developing teammates, mentoring colleagues through detailed feedback, and sponsoring stretch assignments.
→Set the quality bar: Establish team standards for AI-augmented development to prevent quality erosion, and embed "security by design" and threat modeling into the team's daily workflows.

You have 5+ years of experience building high-availability, high-transaction systems in production using Java and cloud-based solutions (preferably AWS).
A technical product thinker: You naturally view problems from a business perspective, focusing on customer outcomes rather than over-engineering solutions for the sake of technical elegance.
Comfortable in ambiguity: You do not wait for perfect clarity; you make timely decisions, define problems when they are unclear, and do not let uncertainty become paralysis.
A boundary-spanning collaborator: You proactively cross team boundaries to solve problems, building relationships before they are urgently needed and navigating difficult conversations directly.
Operationally driven: You have a veteran instinct for spotting systemic failure modes, catching subtle vulnerabilities, and identifying operational risks long before they impact availability.

Our Fantastic Benefits (varies by location)

🌴 20 to 25 days of holiday to support a healthy work-life balance

🥳 Monthly team outing allowance to enjoy social events with your colleagues

☕ Office perks such as refreshments (coffee, sodas etc.), breakfast, fruit and snacks

🍴 Meal card to enjoy a daily lunch allowance to make your workdays even more convenient

💚 Well being support our health allowance covers gym memberships, massages, and much more to help you feel your best

PLUS additional benefits designed to enhance your work-life experience!

Shape Your Role and Make an Impact

Join a dynamic environment where you can take ownership, drive change, and continuously embrace new challenges. We’re looking for dedicated and highly motivated individuals who thrive in a fast-paced environment and enjoy collaborating across different areas of the organisation.

If your skills and experience align with this role, we’d love to hear from you! Apply now and submit your CV in English.