Senior Software Engineer

Episode Six US; Town of Texas (WI); On-site; USD 100,000 - 130,000; Full time

Job summary

Episode Six US, located in Wisconsin, seeks a skilled Java Developer to enhance their innovative API-based payment solutions. The ideal candidate should have a Bachelor's degree in Computer Science and extensive experience in Java software development, particularly in fintech environments.

Key responsibilities include leading software development, mentoring engineers, and driving product launches. The role requires strong analytical skills and a collaborative spirit.

Episode Six US is committed to a supportive and inclusive workplace.

Qualifications

• 7 years of experience working as a Java developer.
• 5 years of experience in Java and JVM memory and performance tuning.
• 4 years of experience in concurrent programming for real-time transaction systems.

Responsibilities

• Code, test, analyze, and review code for accuracy and performance.
• Drive the Software Development Life Cycle, defining sprint goals and leading product launches.
• Provide technical leadership and mentor engineers.

Skills

Java development

JVM performance tuning

Cross-functional leadership

Spring Framework

Hibernate

Education

Bachelor’s degree in Computer Science or Software Engineering

Tools

MySQL

Oracle

Cassandra

MongoDB

Job description

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 – card, QR code, credit, installments, debit, multiple currencies, reward points, or a combination of any of these - all on the same Account. Sound impossible? Episode Six makes the seemingly impossible happen every day.

We’re a global provider of API-based issuer processing and ledger 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 some of the world’s largest banks 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.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or a closely related technical field or foreign equivalent.
• 7 years of experience working as a Java developer.
• 6 years of experience in Java Enterprise software development.
• 5 years of experience in Java and JVM memory and performance tuning. Mastery with Lambdas, Generics, and other data structures such as Map, List, Set.
• 5 years of experience in Spring Framework or equivalent.
• 5 years of experience in commonly used Design Patterns and advanced algorithm design for high-throughput systems.
• 4 years of experience in concurrent programming (e.g., Actor Model, Java CompletableFuture, thread pool Executors) for real-time transaction systems.
• 4 years of experience in Hibernate or equivalent JPA frameworks, optimizing query performance.
• 4 years of experience with relational databases, i.e., MySQL, Oracle, DB2, or MS SQL, and NoSQL databases, i.e. Cassandra or MongoDB.
• 2 years of experience ensuring compliance in software development.
• 3 years of experience leading cross-functional teams or mentoring engineers in a fintech environment.

Major Responsibilities and Duties

• Code, test, analyze and review code for accuracy, functionality, performance, and security.
• Drive the Software Development Life Cycle, defining sprint goals, ensuring operational stability, and leading product launches.
• Provide Technical Leadership and mentoring other engineers with technical competence.
• Communicate strategic technical plans and solutions to stakeholders, including executives, cross‑functional teams, and clients.
• Collaborate with product managers, architects, and other teams to align technical solutions with business and regulatory objectives.
• Document architectural designs, create developer guides, and ensure knowledge transfer through comprehensive documentation.

What Makes a Successful Employee

• We appreciate the unique backgrounds, skill sets, experiences, and contributions each E6er brings. With a strong culture of respect for all, we foster an inclusive and supportive environment for every E6er to excel and grow.
• We take great pride in everything we do, no matter how big or small. We work hard, we work smart, and we sweat the details. We are humble enough to know that we don’t know it all. We are excited to come to work every day, knowing we will be learning, improving, innovating and making an impact.
• A people‑first mentality. Professional development from day 1, a 360 focus on your wellbeing, and the ability to work where you need to, we’re here to support you.

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 [e-mail] if you need any assistance completing our application or need accommodations during your interview process.