Senior Software Engineer – Messaging & Async Platform Infrastructure

Deel; France; Sur place; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Stock grant opportunities

Additional perks and benefits based on

Optional flexible working office

Résumé du poste

Deel in France is seeking a Senior Software Engineer to join our Infrastructure – Messaging & Async Platform team, building and scaling our messaging infrastructure.

You will design, operate, and improve distributed systems powering event-driven architectures, with hands-on work on NATS, Kafka, RabbitMQ, Pulsar, and related tech. This role emphasizes reliability, observability, and performance at scale, with opportunities to influence architecture and collaborate across engineering teams.

Qualifications

• Strong experience as software engineer in infrastructure or distributed systems.
• Hands-on with messaging systems (NATS, Kafka, RabbitMQ, Pulsar) and pub/sub patterns.
• Solid understanding of distributed systems concepts like consistency and backpressure.
• Experience operating production systems at scale with monitoring and incident response.
• Proficiency in one or more languages such as Typescript, Go, Python.
• Experience with cloud infrastructure and containerized environments (Kubernetes, AWS, GCP, Azure).

Responsabilités

• Operate and improve async platform using NATS for messaging across teams.
• Define best practices for event publishing, retries, dead-letter queues.
• Collaborate with application teams to migrate or optimize messaging usage.
• Troubleshoot production issues and drive long-term improvements.
• Contribute to architecture decisions around event-driven systems.
• Participate in incident response and postmortems.

Connaissances

Distributed systems

Backend engineering

Cloud infrastructure

Programming languages (Typescript, Go,

Ownership mindset

Outils

NATS

Kafka

RabbitMQ

Pulsar

Kubernetes

AWS

GCP

Azure

OpenTelemetry

Prometheus

Grafana

Description du poste

Who We Are Is What We Do.

Deel is the all-in-one payroll and HR platform for global teams. Our vision is to unlock global opportunity for every person, team, and business. Built for the way the world works today, Deel combines HRIS, payroll, compliance, benefits, performance, and equipment management into one seamless platform. With AI-powered tools and a fully owned payroll infrastructure, Deel supports every worker type in 150+ countries—helping businesses scale smarter, faster, and more compliantly.

Among the largest globally distributed companies in the world, our team of 7,000 spans more than 100 countries, speaks 74 languages, and brings a connected and dynamic culture that drives continuous learning and innovation for our customers.

Why should you be part of our success story?

As the fastest-growing Software as a Service (SaaS) company in history, Deel is transforming how global talent connects with world-class companies – breaking down borders that have traditionally limited both hiring and career opportunities. We're not just building software; we're creating the infrastructure for the future of work, enabling a more diverse and inclusive global economy. In 2024 alone, we paid $11.2 billion to workers in nearly 100 currencies and provided healthcare and benefits to workers in 109 countries—ensuring people get paid and protected, no matter where they are.

Our momentum is reflected in our achievements and customer satisfaction: CNBC Disruptor 50, Forbes Cloud 100, Deloitte Fast 500, and repeated recognition on Y Combinator's top companies list – all while maintaining a 4.83 average rating from 15,000 reviews across G2, Trustpilot, Captera, Apple and Google.

Your experience at Deel will be a career accelerator. At the forefront of the global work revolution, you'll tackle complex challenges that impact millions of people's working lives. With our momentum—backed by a $17.3 billion valuation and $1 B in Annual Recurring Revenue (ARR) in just over five years—you'll drive meaningful impact while building expertise that makes you a sought‑after leader in the transformation of global work.

About The Role

We are looking for a Senior Software Engineer to join our Infrastructure – Messaging & Async Platform team, focused on building and scaling our messaging and asynchronous communication platform.

This role is ideal for someone who has strong experience designing, operating, and improving distributed systems that power event-driven architectures. You will work on the core infrastructure that enables reliable communication between services, supports high-throughput workloads, and helps engineering teams build resilient asynchronous workflows.

You should have hands‑on experience with technologies such as NATS, Kafka, RabbitMQ, Pulsar, or similar messaging and streaming platforms, as well as a strong understanding of distributed systems, observability, reliability, and performance at scale.

Responsibilities

You will operate and improve our async platform based on NATS designing, building, and maintaining messaging and event-driven infrastructure used across multiple engineering teams. Additionally, you will develop tooling, libraries, and platform capabilities that make asynchronous communication easier, safer, and more reliable for engineering teams.

• Improve reliability, scalability, latency, throughput, and operational visibility of messaging systems.
• Define best practices for event publishing, consuming, schema evolution, retries, dead-letter queues, backpressure, and message durability.
• Partner with application teams to migrate, adopt, or optimize their use of messaging and async workflows.
• Troubleshoot complex production issues in distributed systems and drive long‑term improvements.
• Contribute to architecture decisions around event-driven systems, service communication, and platform reliability.
• Participate in incident response, postmortems, and continuous improvement of operational processes.

Requirements

• Strong professional experience as a software engineer, ideally in infrastructure, platform engineering, backend systems, or distributed systems.
• Hands‑on experience with messaging, streaming, or pub/sub technologies such as NATS, Kafka, RabbitMQ, Pulsar, or similar.
• Solid understanding of distributed systems concepts, including consistency, ordering, delivery guarantees, fault tolerance, retries, idempotency, and backpressure.
• Experience operating production systems at scale, including monitoring, alerting, and incident response.
• Proficiency in one or more programming languages such as Typescript, Go, Python, or similar.
• Experience with cloud infrastructure and containerized environments, such as Kubernetes, AWS, GCP, or Azure.
• Ability to design pragmatic, reliable systems and communicate technical trade-offs clearly.
• Strong ownership mindset and comfort working across teams on shared infrastructure.

Nice to Have

• Deep experience operating NATS, KAFKA, or another messaging platform in high-throughput production environments.
• Experience building internal developer platforms, SDKs, or shared infrastructure services.
• Knowledge of schema registries, event contracts, protobuf, Avro, or JSON Schema.
• Experience with service mesh, API gateways, or service‑to‑service communication patterns.
• Familiarity with infrastructure as code tools such as Terraform, Pulumi, or similar.
• Experience with observability platforms such as Prometheus, Grafana, OpenTelemetry, Datadog, or similar.
• Prior experience defining reliability standards, SLOs, and operational playbooks.

What Success Looks Like

Success in this role means that engineering teams are empowered to adopt messaging and asynchronous workflows with confidence and minimal friction. Our messaging infrastructure will be reliable, observable, scalable, and easy to operate, supported by clear standards, documentation, and tooling for event-driven development. Furthermore, we will actively reduce incidents related to messaging systems through better design, automation, and operational practices, while continuously improving the performance, resilience, and developer experience of our platform.

Why Join Us

You will work on foundational infrastructure that directly impacts the reliability, scalability, and velocity of our engineering organization. This is an opportunity to shape the future of our event-driven architecture, solve challenging distributed systems problems, and build a platform used by teams across the company.

Total Rewards

Our workforce deserves fair and competitive pay that meets them where they are. With scalable benefits, rewards, and perks, our total rewards programs reflect our commitment to inclusivity and access for all.

• Our salary range reflects gross base salary. For commercial roles with commission eligibility, this figure represents On-Target Earnings (OTE), inclusive of base salary and target commission.
• Salary ranges are quoted in USD as a consistent global reference. Your offer will be localized to your country's currency using a market-aligned conversion.
• Final pay is based on objective, job‑related criteria including experience, skills, and location.
• We don't ask about salary history. Offers are based on the role and what you bring to it.

Some things you'll enjoy

• Stock grant opportunities dependent on your role, employment status and location
• Additional perks and benefits based on your employment status and country
• Optional flexible working office membership, with IWG

At Deel, we're an equal‑opportunity employer that values diversity and positively encourage applications from suitably qualified and eligible candidates regardless of race, religion, sex, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, pregnancy or maternity or other applicable legally protected characteristics.

Unless otherwise agreed, we will communicate with job applicants using Deel‑specific emails, which include @deel.com and other acquired company emails like @payspace.com and @paygroup.com. You can view the most up-to-date job listings at Deel by visiting our careers page.

Deel welcomes persons with disabilities to apply to any of our open roles. We will provide application and/or interview accommodations on request throughout the recruitment, selection and assessment process for applicants with disabilities or other needs. If you require application and/or interview accommodations, please inform our Talent Acquisition Team via email ([e-mail]) and a team member will be in touch to ensure your equal participation.

As part of our hiring process, we primarily rely on interviews and role‑related assessments. In limited cases, we may also consider informal background information relevant to the role, in line with our privacy and fairness obligations.

This application process may utilise Automated Employment Decision Tools (AEDT) and AI systems to assist in evaluating candidates based on experience level, technical skills and qualifications. This processing is conducted in compliance with applicable Data Protection, AI Governance and Labour Laws. We ensure human oversight is maintained in all final hiring decisions. Your personal data is not used to train AI models. For more information on how we process your personal data, please see our Recruitment Privacy Policy.

• For NYC Residents: In accordance with NYC Local Law 144, an independent bias audit has been conducted on AEDT