Senior Scala Backend Engineer (f/m)

TN France; Paris; Hybride; EUR 60 000 - 100 000; Plein temps

Résumé du poste

Join a pioneering company on a mission to redefine digital ownership and security. As a key player in the Consumer Services unit, you will leverage your extensive engineering experience to develop high-performance microservices and APIs, driving innovation in the Web3 ecosystem. Collaborate with cross-functional teams to deliver impactful projects while enjoying a hybrid work environment and a culture that values personal development. With a focus on excellence and pragmatism, this is your chance to push the boundaries of what's possible in the digital age.

Prestations

Stock Options

Hybrid Work Policy

Annual Company Outing

Comprehensive Health Insurance

Personal Development Programs

Five Weeks Paid Leave

High-Performance Office Equipment

Transportation Reimbursement

Employee Discounts

Qualifications

• 6+ years of engineering experience with a focus on backend systems.
• Strong leadership skills with experience in cross-team coordination.
• Experience in the Web3 ecosystem and blockchain fundamentals.

Responsabilités

• Develop and maintain high-performance microservices and APIs.
• Contribute to architecture and design of scalable solutions.
• Drive innovation and manage projects effectively.

Connaissances

Scala

Java

Python

Docker

Kubernetes

HTTP

JSON-RPC

GraphQL

SOAP

gRPC

Formation

Bachelor's Degree in Computer Science or related field

Master's Degree in Computer Science or related field

Outils

Microservices Architecture

Event-Driven Architecture

P2P Architecture

CI/CD Pipelines

Description du poste

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Client:

Ledger

Location:

Paris, France

Job Category:

-

EU work permit required:

Yes

Job Reference:

a355fb4fc1ff

Job Views:

2

Posted:

07.05.2025

Expiry Date:

21.06.2025

Job Description:

We’re the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. We’re revolutionaries. Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction, to push the limits of what’s possible. That’s what you’ll do here, in this playground of innovation. With leadership and trust, you’ll write the rules of new technology, and create products that redefine security in a digital age.

Founded in 2014, Ledger is the global platform for digital assets and Web3. Over 20% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in UK, US, Switzerland and Singapore, Ledger has a team of more than 500 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 6 million units already sold in 200 countries.

Ledger Live is a Desktop and Mobile application that helps you manage all your blockchain-backed assets. It’s built in ReactJS (Electron on Desktop and React Native on Mobile) and supports multiple blockchains (coins & NFTs) as well as providing multiple financial services (Buy, Swap, Sell). To sustain the company's growth, Ledger is looking for new talents. You will start by joining Ledger’s Consumer Services business unit to improve the existing transactional services, and keep delivering new ones. The team focuses on creating easy, secure and clever ways for consumers to buy, exchange, sell, send, receive, grow and secure their crypto.

Your mission

• Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers.
• Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges.
• Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems.
• Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows.
• Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards.
• Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach.
• Manage projects effectively, respecting deadlines, priorities, and deliverables.

What we're looking for

• Experienced engineer and continuous learner with 6+ years of relevant engineering experience.
• 2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products.
• Advanced Scala proficiency; expert-level proficiency, and advanced mastery of a second backend language (, Rust, Java, Python, PHP) is a plus.
• Excellent collaboration and communication skills.
• Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision.
• Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization.
• Experience with various web architecture patterns (, Microservices, Event-Driven, P2P).
• Ability to apply and adapt software engineering best practices to the engineering environment.
• Experience in the Web3 ecosystem and in a project involving blockchain fundamentals.
• Solid understanding of Docker and container orchestration tools like Kubernetes.
• Significant experience with web protocols such as HTTP, JSON-RPC, GraphQL, SOAP, and gRPC.
• Strong comprehension of database fundamentals, both relational and NoSQL.
• Experience working in a multicultural environment, with fluency in English being essential.
• Experience in production support of a client-facing application.

What's in it for you

• Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow.
• Flexibility: A hybrid work policy.
• Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
• Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage.
• Well-being: Personal development, coaching & fitness with our dedicated partners.
• Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days.
• High tech: Access to high performance office equipment and gadgets
• Transport: Ledger reimburses part of your preferred means of transportation.
• Discounts: Employee discount on all our products.

We are an equal opportunity employer for all without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age.