Senior Software Engineer (Backend - Java)
Mastercard
Senior Software Engineer (Backend - Java)
Overview
Ethoca, a Mastercard company, is transforming the way merchants and card issuers work together to combat fraud and improve the digital commerce experience. We build highly scalable, secure, and resilient technology that powers collaboration across the global payments ecosystem. We are looking for a Senior Software Engineer who thrives on solving complex technical problems, takes ownership of outcomes, and enjoys building production-grade software that operates at scale. This role is ideal for an engineer who can independently drive initiatives, influence technical decisions, mentor others, and contribute to a culture of engineering excellence. Mastercard powers an inclusive digital economy by making transactions safe, simple, smart, and accessible. Through secure technology, trusted partnerships, and continuous innovation, we help individuals, businesses, and governments realize their greatest potential. About the Role :As a Senior Software Engineer, you will design, develop, and operate secure, scalable software solutions that support critical business capabilities and customer outcomes. You will:
• Design, develop, test, deploy, and maintain high-quality software solutions that meet Mastercard standards for security, reliability, scalability, and operational excellence.
• Independently drive technical initiatives from concept through production, navigating ambiguity, managing dependencies, and delivering measurable business outcomes.
• Collaborate with product, engineering, operations, security, and compliance partners to translate business needs into well-designed technical solutions.
• Contribute to architecture and design decisions for distributed systems, APIs, integrations, and platform capabilities, balancing business priorities with long-term maintainability.
• Own software services throughout their lifecycle, including implementation, deployment, monitoring, incident response, and continuous improvement.
• Troubleshoot complex application and production issues using logs, metrics, traces, debugging tools, and systematic root cause analysis techniques.
• Participate in on-call support, incident reviews, and operational readiness activities while driving improvements that enhance reliability and reduce operational toil.
• Apply secure-by-design and privacy-conscious engineering practices when working with sensitive financial and consumer data.
• Foster engineering excellence through code reviews, technical mentoring, knowledge sharing, and promotion of development best practices.
• Continuously improve automation, testing, observability, developer experience, and software delivery processes.
• Use approved AI-assisted engineering tools responsibly to improve productivity while applying sound engineering judgment, rigorous validation, and strong protection of confidential or sensitive information. All About You :
• Bachelor's degree in Computer Science, Information Technology, a related field, or equivalent practical experience.
• Strong foundation in software engineering principles including system design, source control, testing, debugging, performance analysis, maintainability, and secure software development.
• Expert-level proficiency with Java (17+) and Spring-based application development.
• Experience designing and building RESTful APIs and service integrations.
• Experience developing cloud-native applications and distributed systems, preferably in Azure environments.
• Proficient with distributed source control systems (e.g., Git), including branching strategies, code review workflows, conflict resolution, and release management practices.
• Experience working within modern CI/CD environments, including build automation, deployment pipelines, release validation, and operational support.
• Demonstrated ability to investigate and resolve complex production issues through structured troubleshooting, evidence-based decision-making, and root cause analysis.
• Strong understanding of observability practices including logging, monitoring, metrics, dashboards, distributed tracing, and reliability-oriented alerting.
• Experience with modern data platforms and databases, including data modeling, scalability, performance, and operational trade-offs.
• Working knowledge of authentication, authorization, secrets management, vulnerability management, and secure handling of sensitive data in regulated environments.
• Strong ownership mindset with a proven ability to take initiative, drive work to completion, remove blockers, and deliver results with limited supervision.
• Ability to collaborate effectively across teams, influence technical decisions, and communicate complex concepts to both technical and non-technical stakeholders.
• Comfortable using approved AI-assisted development tools and applying critical judgment to validate AI-generated outputs before production use.
• Committed to continuous learning, engineering excellence, and helping others grow. Preferred Qualifications :
• Experience in payments, fintech, commerce, banking, fraud prevention, or other regulated industries.
• Experience building high-throughput, highly available, or event-driven systems.
• Experience with batch processing, workflow orchestration, or large-scale data pipelines.
• Experience incorporating AI-enabled capabilities into products or engineering workflows.
Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact View email address on us.fitly.work and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.
Corporate Security Responsibility All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
- Abide by Mastercard’s security policies and practices;
- Ensure the confidentiality and integrity of the information being accessed;
- Report any suspected information security violation or breach, and
- Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in Canada, the successful candidate will be offered a competitive pay based on location, experience and other qualifications for the role and may be eligible to participate in a discretionary annual incentive program. This posting reflects one or more current openings on our team.
$111k - $160k
...realize their greatest potential. Title and Summary Senior Software Engineer (Full-Stack - Java, React) Who is Mastercard? Mastercard is a global... ...regulated environments • Strong hands-on experience in backend development with applicable Java technologies (Core...SeniorFull timeWorldwide$50 - $100 per hour
...secure, and maintainable evaluation environments. Qualifications Proven expertise in backend programming using one or more of these languages: C++, Python, Rust, GoLang, JAVA, JavaScript. Strong practical experience with DevOps, cloud infrastructure, CI/CD...SeniorHourly payFor contractorsRemote work$50 - $100 per hour
...solutions for cloud-based systems evaluation. Qualifications Senior backend engineering experience, demonstrated by past work designing, building,... ...programming languages such as C++, Python, Rust, GoLang, Java, or JavaScript. Strong practical experience with DevOps,...SeniorRemote jobHourly payPart timeFor contractorsImmediate start$166.6k - $208.3k
...embodies the elegance of simplicity in engineering, transforming the demanding task of controlling... ...is growing and we’re looking to hire senior backend engineers . We’re a team of pragmatic,... ...the status quo for banking and fintech software, and many of our customers are startups...SeniorFull time- As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service...SeniorFull time
$139.2k - $235.2k
...the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are... ...services of GitLab. An overview of this role We're hiring a Senior Backend Engineer for GitLab's Portfolio Experience team . You'll be an...SeniorFull timeRemote work$175k - $220k
...seeking a highly autonomous, systems-fluent, and AI-proficient Senior Backend Engineer to claim absolute technical ownership over our core AI... ...across the United States and Canada. In this high-leverage software seat, you will sit on a small, fast-moving engineering squad...SeniorPermanent employmentFull timeWork at officeLocal areaRemote workWork from homeWorldwideHome officeShift work- What You'll Do · You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery. · You will support your peers and...SeniorFull time
- ...About this team and role: As a Senior Software Engineer on the Ecosystem Services Team , you’ll build and own back-end systems and the integrations... ...the regular release cycle. Together with many other backend platforms across the organization, these services help...SeniorFull timeRemote workWorldwide
$117.6k - $252k
...trust GitLab to ship better, more secure software faster. The same principles built... ...Analytics Instrumentation is part of the Data Engineering and Monetization (DE&M) group, focused... ...throughout the user lifecycle. As a Senior Backend Engineer, you'll guide the design and...SeniorFull timeRemote work$75.9k - $141.9k
...Requirements: ~6+ years of professional software development experience, along with a... ...Construct and develop applications utilizing Java and Spring Boot within a microservices... ...solutions. Establish and maintain engineering standards for coding quality, testing (SIT...SeniorFull time- ...the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are... ...software development lifecycle to solve this problem. As a Senior Backend Engineer on the newly established Platform Readiness team, you'll...SeniorFull timeRemote work
$75.9k - $141.9k
...looking for 7-15+ years of experience in backend or full-stack development within... ...who is interested in how AI can improve engineering productivity. We need a pragmatic engineer... ...build robust microservices and APIs using Java, Node.js, and Python. We develop intuitive...SeniorFull time$166.6k - $208.3k
...embodies the elegance of simplicity in engineering, transforming the demanding task of controlling... ...is growing and we’re looking to hire senior full-stack engineers . We’re a team of... ...the status quo for banking and fintech software, and many of our customers are startups...SeniorFull time$90k - $130k
...bring at least 2 years of experience in backend engineering, AI automation, or complex systems... ...building and supporting production-ready software with clear modular structure, such as separate... ..., such as Python, JavaScript, Go, or Java, and we have experience working with...SeniorFull timeWork at office- ...economics. Provide deep technical mentorship to senior/staff engineers across Payments pods, upleveling system design... ...high‑volume payment systems) ~ Deep expertise in backend programming (e.g., Python , Go, Java) and cloud‑native architecture. ~ Proven track record...SeniorFull time
$181k
...remote first culture. The Role We’re looking for a Senior Full-Stack Software Engineer with deep expertise in Next.js, TypeScript, PostgreSQL/... ...Next.js/React, TypeScript, PostgreSQL, and a Node-based backend AI-native developer who regularly uses AI-assisted...SeniorRemote jobFull time$90k - $130k
...bring at least 2 years of experience in backend engineering, AI automation, or integrating complex... ...building and supporting production-ready software with clear modular boundaries, such as... ..., such as Python, JavaScript, Go, or Java, along with experience using SQL databases...Full time- ...About the Role: As a frontend-focused Senior Software Engineer , you will own the design and... ...TypeScript . You'll also work in Go on the backend services and APIs that power those... ...Bigtable Postgres / PostgreSQL BigQuery Python Java Terraform...SeniorFull timeCasual work
- ...event-driven platform. As a Senior Server Engineer, you will play a foundational... ...designing and building the backend services, APIs, event processing... ...backend development using Java (Spring Boot, Hibernate,... ...~8+ years of professional software development experience with...SeniorFull time
- About the Role: As a frontend-focused Senior Software Engineer , you will own the design and delivery of the user-facing experiences at the heart... ...in React and TypeScript . You'll also work in Go on the backend services and APIs that power those experiences, but that's...SeniorFull time
- ...a Back-End Developer to build software leveraging Esri's products and APIs to deliver core backend services that solve complex problems... ...2+ years of backend software engineering experience (or equivalent... ...Python, JavaScript/Node.js, and Java for enterprise integrations...Full time
- ...growing the Leverage team and looking for a Senior Software Developer to take real ownership of the... ...join a small, high-trust group of senior engineers and own meaningful scope from early on - designing and building the backend systems that track balances and calculate...SeniorFull time
- As we build Affirm's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for consumer experiences. Search is one of the highest impact surfaces, and we are building a new ...Full time
- Summary The Wikimedia Foundation is seeking a Senior Software Engineer to join the team supporting the Wikidata Platform — the structured data... ...efforts across Wikimedia projects and beyond. This role combines backend engineering and operations ownership. You’ll implement high...SeniorFull time
$145k - $170k
...excited to invite talented and motivated Senior Android Developers to join our award-winning... ...Product Designers, Product Managers, Backend Developers, and Data team Work with Kotlin... ...experience Proficiency with Java or Kotlin Motivation to improve Robinhood...SeniorRemote jobWork experience placementWork at officeShift work- ...more seamless car buying experiences. We're looking for an engineer who combines strong backend engineering fundamentals with modern machine learning expertise. This role sits at the intersection of software engineering and AI, helping us build intelligent, production...Full time
$154.6k - $250.8k
...is at the center of the AI-driven software development shift, providing secure... ...trustworthy by default. We are looking for a Senior Supply Chain Security Engineer to join the team behind Docker... .... What You Bring ~6+ years of backend engineering experience with...SeniorFull timeRemote workHome officeFlexible hoursShift work- Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Marketplace and App Experience domain is the main pillar of our core consumer strategy, driving...SeniorFull time
- ...have 8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin. You... ...years of experience working in search or related recommendation engines You have experience delivering major features, system...Full time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer (Backend - Java). Be the first to apply!
- back-end developer Canada
- backend software engineer Canada
- java web developer Canada
- java software engineer Canada
- java developer full time Canada
- java spring developer Canada
- java developer remote part time Canada
- java developer Canada
- entry level java developer remote Canada
- senior safety specialist Canada










