About Us Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. At Visa, you'll have the opportunity to create impact at scale — tackling meaningful challenges, growing your skills and seeing your contributions impact lives around the world. Join Visa and do work that matters – to you, to your community, and to the world. Progress starts with you. Pay Transparency The estimated salary range for a new hire into this position is zł130 500 - zł214 425 which may include potential sales incentive payments (if applicable). Salary may vary depending on job-related factors which may include knowledge, skills, experience, and location. In addition, this position may be eligible for bonus and equity. Visa has a comprehensive benefits package for which this position may be eligible that includes Medical, Dental, Vision, Pension, Life Insurance, Annual Leave, and Wellness Program. Job Description Pismo are looking for a Senior Software Engineer to help begin the Europe Localisation team. As Pismo expands globally, we are looking to expand the number of features in different markets outside of the core platform. This role demands a strong focus on security, scalability, observability, and reliability, as the team is responsible for mission-critical components You will help build and maintain secure, scalable systems that allow businesses to manage user access, enforce compliance, and ensure operational integrity. These tools enable clients to perform essential tasks like approving sensitive actions, tracking changes, and safeguarding their environments. You will work in a cloud-first, global fintech company that is partnering with major clients and shaping the future of financial technology. Expect hands-on experience, mentorship from seasoned engineers, and the opportunity to make a real impact on systems used by thousands of businesses worldwide. What You'll Do Design, develop, and maintain backend services using Golang following established architectural patterns and engineering standards Independently implement features, system enhancements, and bug fixes based on business and technical requirements Own components and services end-to-end, including development, testing, deployment, monitoring, and operational support Create technical designs and contribute to architecture discussions, ensuring solutions are scalable, secure, reliable, and maintainable Collaborate with product managers, engineers, and stakeholders to refine requirements and define technical solutions Write clean, maintainable, and testable code while promoting engineering best practices and code quality standards Manage and enhance AWS infrastructure using Terraform and contribute to infrastructure automation initiatives Monitor applications using logs, metrics, traces, and observability tools to maintain service health and performance Investigate, troubleshoot, and resolve production issues, performing root cause analysis and implementing preventative improvements Participate actively in code reviews, providing constructive feedback and ensuring adherence to team standards Contribute to CI/CD, operational excellence, security, and platform reliability improvements Produce and maintain technical documentation, design artefacts, runbooks, and operational procedures Mentor and support engineers through knowledge sharing, technical guidance, and peer collaboration Identify opportunities for automation, process improvements, and reduction of technical debt Participate in Agile ceremonies and contribute to estimation, planning, and delivery activities Collaborate with cross-functional teams to successfully deliver business outcomes and customer value Contribute to the continuous evolution of engineering practices, platform capabilities, and service architecture This is a hybrid position. For this role, you must be based within commutable distance from the Visa Warsaw office. Hybrid employees are expected to work from the office a minimum of three days a week – specifically, Tuesday, Wednesday and Thursday. Visa requires at least 3 days in office, expectations of these days will be confirmed by your Hiring Manager. Qualifications Basic Qualifications Strong understanding of backend development principles, distributed systems, and RESTful API design At least 4 years of professional software engineering experience with Java or Golang; experience with Golang preferred or a demonstrated willingness to learn Experience designing, developing, and maintaining production-grade backend services Ability to write clean, maintainable, and well-tested code while applying secure coding practices Experience debugging complex application and production issues using logs, metrics, and observability tools Strong understanding of software engineering best practices including testing, code reviews, CI/CD, and version control Experience working with AWS services in development or production environments Experience provisioning or managing cloud infrastructure using Terraform or similar Infrastructure-as-Code tools Understanding of scalability, reliability, performance, and resiliency considerations in distributed systems Ability to independently analyse requirements and translate them into technical solutions Strong communication and collaboration skills with the ability to work effectively across engineering, product, and operational teams Experience working in Agile environments using Scrum, Kanban, or similar methodologies Preferred Qualifications Experience developing services using Golang in a cloud-native environment Experience implementing observability, monitoring, alerting, and operational dashboards Experience supporting production systems with on-call or operational responsibilities Experience working with event-driven architectures, messaging systems, or microservices Experience mentoring junior engineers and providing technical guidance Experience contributing to architectural design discussions and technical decision-making Visa is an EEO Employer Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law. Visa welcome and encourages application from persons with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.