Senior Software Engineer (Backend - Java)

AI summary

Senior Software Engineer to design, build, and operate backend services for Quidax's crypto platform. Full-time role based in Lagos, Nigeria. Requires BA/BSc/HND and experience in Java backend development.

• Design and build backend services for a crypto platform
• Mentor engineers and shape technical direction
• Full-time position in Lagos, Nigeria

Original source description

Senior Software Engineer (Backend - Java) at Quidax July, 2026 | MyJobMag Login Signup Employers Nigeria Ghana Kenya Nigeria South Africa UK Jobs Career Advice Post Job Search for Jobs Abia Abuja Adamawa Akwa Ibom Anambra Bauchi Bayelsa Benue Borno Cross River Delta Ebonyi Edo Ekiti Enugu Gombe Imo Jigawa Kaduna Kano Katsina Kebbi Kogi Kwara Lagos Nasarawa Niger Ogun Ondo Osun Other Oyo Plateau Rivers Sokoto Taraba Yobe Zamfara Administration / Facilities Agriculture / Agro-Allied Art / Crafts / Languages Aviation / Aerospace Banking Bursary and Scholarships Caregiver / Nanny / Social Workers Catering / Confectionery Construction and Site Engineering Consultancy Content, Editorial and Journalism Customer Care, Success and Service Data, Business Analysis and AI Driving Education: / Teaching / Training Engineering / Technical Environment Health and Safety Finance / Accounting / Audit Food, Beverage and Hospitality General Graduate Jobs Human Resources / HR ICT / Computer Insurance Internships Janitorial Services Legal and Regulatory Logistics Manufacturing Marketing and Communication Media Production and Entertainment Medical / Healthcare NGO/Non-Profit Oil and Gas, Energy and Mining Pharmaceutical Procurement / Store-keeping / Supply Chain Product Management Project and Program Management Real Estate Research and Development RFP / RFQ / EOI Risk Management and Compliance Sales and Business Development Science Security / Intelligence Shipping and Maritime Sports, Fitness and Personal Care Strategic and Top Management Travels and Tours UX, Design and Architecture Volunteer BA/BSc/HND First School Leaving Certificate MBA/MSc/MA NCE OND Others PhD/Fellowship Professional Certificate Secondary School (SSCE) Vocational Close Detailed Search X Send this job to a friend Type the email of your friend Enter your email Type Your Email Message I think you may be interested in this position - Senior Software Engineer (Backend - Java) at Quidax. This is the link: https://www.myjobmag.com/job/senior-software-engineer-backend-java-quidax?utm_source=email_friend. Copy and paste link on browser if link is not working. Check it out! X Did you notice an error or suspect this job is scam? Tell us. Enter your email Type Your Message Senior Software Engineer (Backend - Java) at Quidax View Jobs in ICT / Telecommunication / View Jobs at Quidax Posted: Jul 17, 2026 Deadline: Not specified Save Email @gmail.com @yahoo.com @outlook.com Quidax is the simplest and most secure way to buy and sell bitcoin, ethereum, ripple and other altcoins. Read more about this company Senior Software Engineer (Backend - Java) Job Type Full Time Qualification BA/BSc/HND Experience: Location Lagos Job Field About the Role As a Senior Software Engineer, you'll design, build, and operate backend services that power critical parts of the Quidax platform. Beyond implementation, you'll help shape technical direction, mentor engineers, improve engineering practices, and contribute to building a world-class engineering culture. We're looking for someone who can balance speed with quality, make sound engineering trade-offs, and take ownership of services from design through production. What You’ll Be Owning Build & Scale Core Platform Services: Within your first 90 days: Deliver production-ready backend features independently. Become a trusted owner of one or more backend services. Contribute meaningfully to architecture and design discussions. Improve service reliability, observability, or performance in at least one area of the platform. Within your first 6 months: Lead the design and implementation of complex backend systems. Drive improvements to engineering quality, maintainability, and developer experience. Help establish patterns and best practices for building scalable services. Mentor engineers through code reviews, technical discussions, and design collaboration. Drive Reliability & Operational Excellence: Own services throughout their lifecycle, from design and implementation to deployment, monitoring, and production support. Improve system reliability, observability, security, and performance. Investigate production incidents and drive long-term fixes rather than temporary workarounds. Continuously identify opportunities to simplify systems and reduce technical debt. Contribute to Technical Direction: Participate in architecture reviews and technical decision-making. Help shape how we design APIs, distributed systems, and internal platform services. Contribute to technical documentation, RFCs, and engineering standards. Make thoughtful engineering trade-offs between speed, complexity, scalability, and maintainability. Build a Strong Engineering Culture Review code and provide actionable feedback. Advocate for testing, operational excellence, and engineering best practices. Collaborate effectively across Product, Design, Compliance, Risk, and Engineering. Raise the bar for ownership, quality, and technical excellence. Biggest Challenges You’ll Tackle Here's what will keep you up at night, in the best possible way: Designing systems that handle high transaction volumes without sacrificing reliability. Building services that remain secure, available, and observable in a fast-moving financial environment. Balancing engineering speed with the quality standards expected of financial infrastructure. Simplifying increasingly complex systems as the platform grows. Debugging and solving difficult production issues where the answer isn't obvious. Scaling architecture, processes, and engineering practices alongside rapid business growth. What We're Looking For We're less interested in someone who simply knows Java and more interested in someone who has built and operated real production systems. You'll likely be a strong fit if you: Have 6+ years of professional software engineering experience. Have strong experience: building backend systems with Java and Spring Boot. Have designed and operated production-grade services at scale. Understand distributed systems, micro-services, asynchronous processing, and event-driven architectures. Have experience: working with PostgreSQL or MySQL in production environments. Have worked with Redis, caching strategies, and messaging systems such as Kafka. Can design APIs and systems that are reliable, maintainable, and easy to evolve. Have strong debugging, troubleshooting, and production incident management skills. Collaborate effectively across teams and communicate technical ideas clearly. Take ownership from problem definition through production support. Technical Skills: You should have strong practical experience: across most of the following areas: Java: JVM Fundamentals, Memory Management, Collections Framework, Generics, Concurrency & Multithreading, Streams API, Exception Handling, Functional Programming Concepts, Performance Optimization, Garbage Collection Fundamentals. Spring Ecosystem: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Validation, Spring Scheduling, Spring Configuration, Dependency Injection, Transaction Management. Databases: PostgreSQL or MySQL, Query Optimization, Indexing, Transactions, Isolation Levels, Data Modeling, Database Migrations, Connection Pooling. Distributed Systems: Microservices Architecture, Event-Driven Architecture, Asynchronous Processing, Message Queues (Kafka, RabbitMQ, etc.), Service Communication, Distributed Transactions, Idempotency, Eventual Consistency, Caching Strategies, API Versioning. Cloud & DevOps: Docker, Kubernetes, CI/CD Pipelines, AWS (or equivalent cloud platform), Infrastructure as Code (nice to have), Logging & Monitoring, Observability, Distributed Tracing. Security: OAuth2, OpenID Connect (OIDC), JWT, Authentication & Authorization, Secure API Development, OWASP Top 10, Secrets Management. Our Tech Stack: While experience: with every technology isn't required, you'll likely work with: Java 17+ Spring Boot Spring Data JPA Spring Security PostgreSQL / MySQL Redis Kafka Docker Kubernetes AWS OpenTelemetry GitHub Actions Grafana Prometheus REST APIs OAuth2 / OIDC / JWT Engineering Principles: At Quidax, we value engineers who: Continuously improve engineering practices Embrace feedback and continuous learning Make thoughtful engineering trade-offs Prioritize simplicity over unnecessary complexity Take ownership beyond writing code Build with reliability, scalability, and security in mind Use data to guide technical decisions Collaborate effectively across teams Bonus Points If You Have: Experience: with Go (Golang). Experience: in fintech, crypto, payments, trading, or regulated industries. Experience: building exchange platforms, trading systems, or financial infrastructure. Experience: with WebSockets, market data systems, liquidity management, or exchange integrations. Experience: with Kubernetes, AWS, and cloud-native environments. Experience: with Domain-Driven Design (DDD), contract testing, or large-scale event-driven systems. Reporting Line: You'll report to the Engineering Manager and work closely with senior engineers, product managers, and mobile and frontend teammates to build and strengthen the core of our backend infrastructure. Check how your CV aligns with this job Method of Application Interested and qualified? Go to Quidax on quidax.factorialhr.com to apply Build your CV for free. Download in different templates. Share Save Email Report Send your application Your Name Your Email Your Phone Number Your Current Location Abia Abuja Adamawa Akwa Ibom Anambra Bauchi Bayelsa Benue Borno Cross River Delta Ebonyi Edo Ekiti Enugu Gombe Imo Jigawa Kaduna Kano Katsina Kebbi Kogi Kwara Lagos Nasarawa Niger Ogun Ondo Osun Other Oyo Plateau Rivers Sokoto Taraba Yobe Zamfara Subject of your Application Your cover letter Attach your CV/Doc View All Vacancies at Quidax Back To Home Find Your Dream Job! 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