Senior Software Engineer

WHAT YOU’LL DO: We are seeking a highly motivated and experienced Senior Software Engineer to join our fast-growing team. You will design and build large-scale, multi-tenant SaaS systems that power Nue's core revenue workflows. You'll work across a powerful stack — Java/Spring Boot, Node.js/React, modern databases (SQL & NoSQL), event streaming platforms, and cloud infrastructure (AWS, Snowflake) — solving complex challenges in scalability, automation, and financial workflows. RESPONSIBILITIES: * Design, architect, and implement large-scale, multi-tenant SaaS applications with a shared-nothing architecture based on the Spring Boot framework, leveraging microservices (API gateway, service registry, service monitoring), and event-driven patterns. * Own end-to-end feature delivery: scoping, design, implementation, testing, rollout, and operations. * Define and evolve domain models and data schemas to ensure accuracy, auditability, and long-term maintainability. * Build and maintain high-throughput, low-latency services that process large volumes of events with strong consistency and reliability guarantees. * Design and implement event-driven workflows using message queues and streaming platforms (e.g., Kafka, Kinesis, RabbitMQ, SNS/SQS, Webhooks). * Drive technical excellence and best engineering practices — design reviews, RFCs, continuous integration, code reviews, observability, CI/CD. * Provide architecture and technical guidance, and mentor other engineers in distributed systems design, database modeling, and scalability patterns. * Establish and maintain SLIs/SLOs (latency, throughput, accuracy, availability) for production services and continuously improve them. * Collaborate closely with Product and cross-functional teams to translate business requirements into robust, fault-tolerant system designs. * Deliver high-quality design and code using modern tools and agile methodologies including TDD, CI, refactoring, and code reviews. * Stay current with relevant technologies (event streaming, data infrastructure, security, AI-assisted development) and apply them pragmatically to Nue's SaaS platform. WHAT YOU'LL BRING: * Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience). * 5+ years of professional software development experience, designing and building large-scale, distributed backend systems. * 5+ years of experience with Java (or JVM languages) and building microservices on frameworks such as Spring Boot. * Deep understanding of relational databases (e.g., PostgreSQL, MySQL) including schema design, indexing, and performance optimization. * Experience with multi-tenant and/or sharded database architectures and strategies for scale and isolation. * Hands-on experience with event-driven architectures and streaming or messaging platforms (e.g., Kafka, Kinesis, RabbitMQ, Pub/Sub). * Solid understanding of data consistency models, idempotency, exactly-once / at-least-once processing, and eventual consistency patterns. * Experience with at least one major cloud provider (AWS, GCP, or Azure) and building cloud-native services (containers, serverless, managed data services). * Strong SQL skills and familiarity with database performance profiling and tuning. * Experience with concurrent programming and thread safety in production applications. * Experience with observability (metrics, logs, traces) and diagnosing performance and reliability issues in production. * Test-driven mindset, with hands-on experience writing and maintaining automated unit, integration, and end-to-end tests; familiarity with test automation frameworks such as Playwright or similar tools. * Strong portfolio or examples of past projects and code. * Strong communication and collaboration skills, with the ability to explain complex systems to both technical and non-technical stakeholders. * Enthusiasm for working in a fast-paced, startup-like environment and taking end-to-end ownership of critical systems. BONUS POINTS (OPTIONAL): * Experience with finance, billing, subscriptions, payments, or revenue-lifecycle systems in a SaaS or financial-services context. * Experience with Snowflake or other modern data warehouses for reporting, analytics, and reconciliation use cases. * Familiarity with NoSQL or time-series databases and when to apply them alongside relational systems. * Experience with enterprise-scale systems and high-volume transactional workloads. * Understanding of compliance, security, and auditability concerns in financial systems (e.g., PCI considerations, data retention, audit trails). * Experience integrating with Salesforce or other CRM/ERP platforms. * Demonstrated ability to effectively use AI-assisted development tools (e.g., Claude Code, Codex, or similar) to accelerate development, improve code quality, debug complex issues, and explore system designs. * Strong attention to detail, ownership mindset, and comfort operating in ambiguous, evolving product domains.

Design and implement large-scale, multi-tenant SaaS systems and event-driven workflows using Spring Boot and microservices. Own the end-to-end feature delivery process while mentoring other engineers in distributed systems design and scalability.

Requires a Bachelor's degree and 5+ years of professional experience in Java, Spring Boot, and building distributed backend systems. Must have deep expertise in relational databases, cloud-native services, and event-streaming platforms.

• PostgreSQLSouhaitée
• ReactSouhaitée

Relevées dans la description du poste. Confirmez les exigences importantes ci-dessus.

• Java
• Spring Boot
• Node.js
• React
• SQL
• NoSQL
• AWS
• Kafka
• Microservices
• Distributed Systems
• Event-Driven Architecture
• PostgreSQL
• Snowflake
• TDD
• CI/CD
• API Gateway

• Software
• Technology
• Engineering
• Finance & Accounting
• Data & Analytics

Formation minimale

Baccalauréat

Expérience minimale

5+ ans

Langue de l’offre

anglais

Heures de travail

40 heures par semaine