Application Support Engineer

Posted 5/26/2026 · last confirmed live 8/26/2026

How do you want to pay? It’s a question you’ve answered on-screen or in-person thousands of times, but your choices have always been limited. Imagine the flexibility to pay however you want – credit, debit, multiple currencies, frequent flyer miles, loyalty points, or digital payments - all on the same card or digital wallet. Sound impossible? Episode Six makes the seemingly impossible happen every day.    We’re a global provider of API-based payment processing and wallet management infrastructure. We’re 100% cloud-native, hyper-configurable, and a “Top 10 Place to Work in Fintech.” And we’re changing how people think about payments.    Today, we’re powering payments for one of the world’s largest banks and airlines and numerous innovative fintechs. E6 is headquartered in Austin with offices in Tokyo, Singapore, Brisbane, and London. We provide technology for clients in 24 countries on four continents. Since 2018 when we launched with HSBC, we have grown more than 10x.    Interested in redefining what’s possible in payments? Join Episode Six today.    What role we’re hiring for:      We are a growing fintech organization looking to add an Application Support Engineer  to our Client Operations team based in Buenos Aires, Argentina !   What you’ll be responsible for in this role:   Application support specialists work closely with internal E6 technical teams and our outside clients. You act as a technical bridge, helping customers see the biggest return from their investment in E6 technology and services. To excel, you bring strong technical skills and excellent people skills.    There are two distinct phases to the work of application support for each of our projects: Implementation, and post-implementation support.     During the implementation phase, you work closely with teams from our clients, converting our solution design and technical platform into a concrete build. During post-implementation support, you assist clients with incident support and planning configuration changes.     As subject matter experts for our solutions, you also act as a mentor to your teammates and our clients, either formally (such as through training) or informally.    Great candidates will be proactive problem solvers and share our vision for customer success and have a focus on service improvements – such as through the development of re-usable content and recommendations.    Requirement to support occasional weekend and public holiday coverage. What experiences and skills are necessary to be successful in this role:   The successful candidate will bring experience supporting Java-based applications in the financial space, together with strong people skills and a focus on collaborative working.    Mandatory    5+ years supporting mission-critical Java applications   5+ years experience in financial services   3+ years in a client-facing role   Experience writing basic queries to extract data from SQL & NoSQL databases   Experience querying RESTful APIs using PostMan or other tools   Able to participate in on-call rotation with peers for escalation support   Prioritise, triage, and resolve support issues and requests    Liaise across other IT Teams to achieve the desired outcome    Provide accurate and professional communications to internal Customers on the progress against issues & requests    Assist in the deployment of core Products, taking end-to-end ownership for the delivery of assigned work packages    Identify opportunities to drive process efficiency and automation    Desirable    Familiarity with PCI DSS    Experience with Mastercard/Visa card processing networks    Knowledge & Skills      Excellent personal management and organisation skills.     Excellent communication skills, both verbal and written.     An analytical mindset and technical ability.     Ambitious and driven to exceed expectations.    Ability to communicate at all levels, build positive relationships with colleagues and clients and maintain excellent customer service skills.    Credible and professional.    Able to challenge appropriately and present solutions.    High attention to detail.    Self-starting and able to work on own initiative.   E6 is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics.     E6 is committed to providing reasonable accommodations for qualified individuals with disabilities who may require additional assistance in engaging in our application and interview process. Please feel free to reach out to E6's Talent Acquisition Team at recruiting@episodesix.com if you need any assistance completing our application or need accommodations during your interview process.   

This role is published by Episode Six on greenhouse. SwiftFit is not the employer and does not accept applications.