Senior Performance Engineer

Challenge yourself and us

At AdvanceWorks, we learn together, grow together, and have fun together. And we do all this while creating great software solutions for clients across many industries and geographies.

We are constantly challenging ourselves and each other to use the latest technologies and the best methodologies and make sure we walk the talk.

Exciting as it may sound, we also have our red lines : each of us is a unique person, with unique opinions, beliefs, options, interests, hopes, and fears. With the right to speak its mind, mindful about the common goals, and always being constructive.

It is the way we respect each other, discuss different points of view, challenge ourselves and each other, while tackling our common challenges, that makes us strong. United. Brave. And sure that there will be a better tomorrow, even when we do mistakes. Because we learn from our failures and successes.

What will be your role

We are looking for a Senior Performance Engineer to join our team in a strategic project with a major banking client — one of the largest in Portugal. This is a high-impact role at the heart of the bank’s application ecosystem, which includes over 600 applications ranging from legacy mainframe systems to cloud-native services.

You won’t be alone : there’s already a small internal team working on performance engineering — but with 600 apps, two people can only do so much. That’s where you come in.

Your mission will be to support performance analysis across heterogeneous systems, guide teams in diagnosing bottlenecks, and define clear, data-driven recommendations — whether it’s related to application logic, infrastructure limitations, or capacity planning.

You’ll be working with teams that couldn’t be more different — from Cobol veterans in their 50s maintaining mission-critical mainframe apps, to agile squads building modern digital experiences. Your ability to communicate across generations, backgrounds, and technical stacks will be as critical as your technical skills.

What you’ll be doing :

• Analyzing system performance of on-prem and cloud-based applications
• Identifying performance issues through testing, monitoring, and diagnostics
• Executing and / or guiding performance testing for legacy and modern applications
• Supporting infrastructure assessment : e.g., recognizing when underpowered frontend servers are bottlenecking KPIs
• Recommending capacity upgrades and architectural changes when needed
• Collaborating with development, infrastructure, and ops teams to ensure performance best practices
• Bridging communication between highly distinct teams — from legacy to agile — with clarity and diplomacy
• Contributing to systemic improvements in how performance is measured, addressed, and governed across hundreds of apps

Who will work by your side

You’ll join the AdvanceWorks team and work in close collaboration with the client’s internal performance engineers and broader IT organization. This includes development teams working on legacy COBOL systems and others developing modern apps using agile methodologies.

You’ll bring a fresh, pragmatic perspective and help accelerate the client’s efforts to optimize system performance at scale. You’ll have the autonomy to shape how this discipline evolves within the bank — while always having a supportive, experienced team by your side.

What should you bring to the team

What is in it for you

Don’t hold off any longer and apply now! If you have any questions, drop us a line at