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Backend Engineer

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Backend Engineer

Staff Site Reliability Engineer (x/f/m)

Doctolib

Parisfulltimestaff

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Описание вакансии

Your Impact

We are looking for a Staff Site Reliability Engineer to join our SRE team dedicated to platform reliability within Platform Engineering.

Your mission will be to act as a technical leader driving Doctolib's reliability and scalability at a European scale, ensuring our platform remains reliable, debuggable, and resilient across infrastructure, observability, and cross-cutting reliability initiatives. You will play a pivotal role in a team driving reliability standards across 170+ applications, contributing directly to supporting 520,000 health professionals and 90 million patients in their daily healthcare journey.

This role sits at the intersection of infrastructure, developer experience, and product engineering. You'll act as a technical leader and strategic partner to SREs, software engineers, and product teams, guiding decisions, mentoring engineers, and driving cross-cutting initiatives that elevate our operational maturity.

What you'll do

Your responsibilities include but are not limited to:

  • Lead large-scale cross-cutting reliability initiatives across the platform, spanning infrastructure automation, observability, and incident management
  • Identify and drive improvements to incident detection, response, and postmortem analysis capabilities
  • Define and evolve SLOs, error budgets, and alerting standards across multiple product teams
  • Take part in the on-call rotation, and actively contribute to improving our on-call experience by refining alerting, reducing noise, and ensuring actionable telemetry
  • Serve as a mentor and technical coach to senior engineers, helping elevate the craft of reliability engineering across the company
  • Influence strategic decisions by providing technical guidance to leadership and representing reliability engineering in architectural reviews and platform discussions
  • Partner with software engineering teams to embed reliability practices early in the development lifecycle

Who you are

Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply.

You'll be a great fit if you:

  • Have extensive experience (8+ years) in SRE, platform engineering, or infrastructure roles within a large-scale, multi-team production environment
  • Have proven experience with cloud platforms such as AWS, GCP, or Azure
  • Have strong experience with containerization and orchestration technologies, Kubernetes is a must, its deployment and scaling strategies ecosystem
  • Have implemented and operated SLIs, SLOs, and error budgets in production
  • Have experience managing on-call rotations and leading incident response in high-stakes environments
  • Have a strong systems engineering background with fluency in at least one backend programming language (e.g., Go, Python, Ruby)
  • Have a proven ability to lead through influence: setting technical direction, driving consensus, and mentoring engineers across teams
  • Are comfortable balancing long-term architecture work with fast, iterative improvements
  • Have clear, concise communication skills, both written and verbal, with the ability to drive alignment in ambiguous environments
  • Partner with feature teams to accelerate their production readiness, providing hands-on guidance on reliability best practices, launch reviews, and operational standards before go-live
  • Are fluent in English

It would be fantastic if you:

  • Have deep expertise in observability tooling and architecture (logging, tracing, metrics)
  • Have experience designing and operating high-scale telemetry pipelines and working with developers to improve instrumentation quality
  • Appreciate working in regulated environments, healthcare, fintech, or similar; at Doctolib, data privacy and compliance are part of every engineering decision
  • Care about reliability enablement, golden paths, runbooks, shared libraries

Life at Doctolib Tech

  • Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements.
  • Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.
  • We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here.

Want to learn more about our tech culture and environment? Visit the Doctolib Tech site.

What we offer

  • Free comprehensive health insurance (basic package) for you and your children
  • 25 days of paid vacation per year, plus up to 14 days of RTT
  • Free mental health and coaching services through our partner Moka.care
  • Work from abroad for up to 10 days per year thanks to our flexibility days policy
  • Lunch vouchers (Swile card) worth 8.50 euros per working day, with 4.50 euros covered by Doctolib
  • 50% reimbursement of your public transport subscription
  • Parent Care Program: receive one additional month of leave on top of the legal parental leave
  • Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
  • Relocation support in case of international mobility
  • Access to the best AI tools for coding, development and dedicated training

Our interview process

  • Recruiter Interview
  • System Design Interview
  • Technical SRE Interview
  • Behavioral Interview
  • At least one reference check

We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.

Job details

  • Permanent position
  • Tech stack: Kubernetes, Terraform, AWS / GCP, Prometheus, OpenTelemetry, Datadog, ArgoCD
  • Full-time
  • Paris, France
  • Hybrid work setup (up to 2 remote days per week)
  • Start date: as soon as possible

We welcome everyone

At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination.

The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability.

To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process.

Join us in building the healthcare we all dream of!

Your data privacy

*All information provided is processed by Doctolib for application management. For data processing details, click here:*Germany *|*France *|*Italy |Netherlands. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

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Backend Engineer

Business Development Representative

Volta Software

Parisfulltime

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Описание вакансии

You're the first point of contact between Volta and enterprise accounts in France. Your mission: open qualified conversations with senior decision-makers (CEOs, commercial directors, operations leaders) at large B2B distributors, wholesalers, and brands (€100M+ revenue), run discovery conversations that qualify both fit and readiness, deliver product demonstrations that map to their stated pain, and hand off genuinely warm, well-prepared opportunities to our Account Executives.

This is not a volume game. You're hunting at enterprise scale, smaller target list, deeper engagement, higher-quality handoffs. You combine prospecting rigor with the ability to speak credibly about product and process.

Enterprise prospecting & sequencing

  • Identify and prioritize target accounts aligned with Volta's ICP
  • Build personalized multichannel sequences (LinkedIn, email, phone) tailored to each buyer persona and their operational challenges
  • Move beyond initial contact: you know how to get past gatekeepers, overcome common objections, and advance conversations with C-level decision-makers

Discovery & ICP qualification

  • Conduct 20–30 min discovery calls that qualify both pain and readiness for change
  • Assess true enterprise fit: supply chain complexity, digitalization maturity, procurement process sophistication, budget awareness
  • Ask diagnostic questions that uncover whether this account is truly a fit, not just whether they check demographic boxes
  • Document decision-maker org, buying process, and timeline — not just pain points

Product demonstration

  • Run 30-min product demos in discovery calls that showcase how Volta solves stated pain
  • Demonstrate product knowledge: understand core features, typical use cases, and how to tailor the walkthrough to the prospect's situation
  • Use the demo as a qualification tool: their engagement and questions tell you if they're ready to move forward

Account preparation for AE handoff

  • Hand off opportunities with clear context: stakeholders identified, pain points mapped to features, process timeline understood, initial objections surfaced
  • Prepare a brief for the AE: this is what they care about, this is who you'll be talking to, this is why they took the call
  • Ensure the account is genuinely ready for AE engagement, not just "they said yes to a meeting"

CRM discipline & reporting

  • Maintain rigorous activity tracking in HubSpot: call notes, discovery findings, sequence status, stage progression
  • Report weekly: pipeline generated, discovery-to-qualified conversion rate, demo outcomes, feedback for continuous improvement
  • Contribute to team KPIs: qualified opportunities per month, AE conversion rate, activity velocity

Messaging & learning

  • Share field intelligence: what objections you're hearing, which angles work, which buyer personas engage, market signals
  • Contribute to messaging refinement with the leadership team
  • Continuously iterate on positioning based on what's landing with your accounts

Must have

  • 2–3 years of prospecting experience
    — you've already successfully hunted at this scale or are ready to step up to it
  • Demonstrable track record
    : you can show us qualified opportunities you personally generated, with pipeline metrics (reply rate, discovery-to-qualified ratio, what you consider "qualified")
  • Senior decision-maker prospecting experience
    — you know how to engage C-level and Director-level buyers, not just influencers
  • Proficiency with core tools
    : LinkedIn Sales Navigator, email sequencer (Lemlist, La Growth Machine, or similar), HubSpot
  • Native French + excellent written communication
    — professional English for internal collaboration
  • Product curiosity
    — you're comfortable learning product features on the fly and can speak credibly about how software solves operational problems
  • Resilience + rigor
    — you thrive in a demanding environment, own your numbers, and treat discipline as competitive advantage

Nice to have

  • Prior experience running product demos or presenting to senior stakeholders
  • Account-based prospecting (ABM) methodology experience
  • Domain knowledge in distribution, wholesale, supply chain, ERP, or B2B commerce
  • Exposure to AI/automation and why it matters in B2B operations
  • Track record of moving from SDR/BDR into more complex enterprise hunting roles

Chez Volta, nous croyons que la diversité rend nos équipes plus fortes. Toutes les candidatures sont les bienvenues, quels que soient le genre, l'origine ou le parcours.

  1. Cultural fit
    with Elsa, Chief of Staff (30 min)
  2. Live case study + technical discussion
    (60 min)
  3. Debrief + Founder talk
    with Paul (Co-CEO) and Mario (Co-CEO)
  4. Reference check

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Backend Engineer

Senior Software Engineer II, Integration Team

Checkout.com

Parisfulltimesenior

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Описание вакансии

Company Description
We’re
Checkout.com
. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.
We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.
Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.
If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.
With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.
Join us at ProcessOut

ProcessOut is a pioneer in the payment orchestration space. We are on a mission to help merchants build, scale and optimize their payment infrastructure. We work to bring simplicity, flexibility & performance to payments.

Millions of transactions are routed via ProcessOut everyday for merchants all over the world. We are proud to partner with amazing merchants like Glovo, Bolt, Sainsbury’s, Dott, Rakuten and many more!

We were acquired by Checkout.com in 2020 with the goal of growing our global reach.

If you are looking to join a very fast-moving company with passionate, hard-working & fun teams, ProcessOut is for you! At ProcessOut, we are looking for people who are convinced they can play a central part in the Company's success! We are looking for people who are passionate, who are looking to achieve their full potential & who will actively contribute to strengthen the links between our teams. We value people that fully own their work and are passionate about building the next generation of online payments with us.

Software Engineering At ProcessOut
We are a self-sufficient team that operates in a fully agile way.

When it comes to technical stack, we are hosted in
AWS
, use
EKS
and our primary development language is
Go
. As we always strive to use the best tool for the job, we use a combination of
Redis
,
DynamoDB
and
Postgres
for persistence layer, and
REST
,
gRPC
and
queues
for communication.

We are experiencing constant growth in the number of transactions handled, new clients, and integrations. That’s why we pay very close attention to elegant design and scalability of the platform. We are looking for dedicated engineers who would like to join us on our journey.

About You

  • At least 5 years of experience in software development in Golang
  • Know your way around web-related tech (HTTP, TLS, proxies, API conventions...)
  • Have had experience in building technical frameworks that handles critical flows
  • Able to communicate with third-party providers from both a technical perspective and business
  • Be product minded
  • Always curious and passionate about understanding the business
  • Have worked in financial services
  • Have experience mentoring software engineers, and ambition to become manager

Nice to have

  • Payment knowledge around Cards or Alternative Payment Methods

What You Will Be Doing

  • Working within our Integration team to deliver new API connections with Payment Service Providers, maintain existing integrations, and help evolve the platform by implementing new functionalities and optimizing performance.
  • Contributing to services and overall architecture by discussing technical solutions, proposing enhancements, and actively contributing to our codebases.
  • Build the technical vision of our payment framework with the goal of maximizing quality and velocity of the team
  • Own the product vision to help on designing, building, and releasing new features
  • Participating in our on-call paid rotation
  • Mentor and manage software engineers

If you don't meet all the requirements but think you might still be right for the role, please apply anyway. We're always keen to speak to people who connect with our mission and values.

Additional Information
Bring all of you to work
We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one.

Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.

We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.

It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.

Life at
Checkout.com
We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.

Curious about what it’s like to be part of our team? Visit our Careers Page to learn more about our culture, open roles, and what drives us.

For a closer look at daily life at Checkout.com, follow us on LinkedIn and Instagram

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Backend Engineer

Forward Deployed Engineer - Paris

OpenAI

Parisfulltime

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Описание вакансии

About The Team
OpenAI’s Forward Deployed Engineering team partners with customers to turn research breakthroughs into production systems. We operate at the intersection of customer delivery and core platform development.

About The Role
Forward Deployed Engineers (FDEs) lead complex end-to-end deployments of frontier models in production alongside our most strategic customers. You will own discovery, technical scoping, system design, build, and production rollout, partnering directly with customer engineering and domain teams.

You will measure success through production adoption, measurable workflow impact, and eval-driven feedback that changes product and model roadmaps. You’ll work closely with our Product, Research, Partnerships, GRC, Security, and GTM teams.

This role is based in Paris. We use a hybrid work model of 3 days in the office per week. We offer relocation assistance. Travel up to 50% is required.

In this role you will

  • Own technical delivery across multiple deployments from first prototype to stable production
  • Build full-stack systems that deliver customer value and sharpen how we learn
  • Embed closely with customer teams, understand their needs, and guide adoption of what you build
  • Scope work, sequence delivery, and remove blockers early
  • Make trade-offs between scope, speed, and quality; adjust plans to protect delivery
  • Contribute directly in the code when progress or clarity depends on it
  • Codify working patterns into tools, playbooks, or building blocks that others can use
  • Share field feedback that helps Research and Product understand where the models succeed and where they can improve
  • Keep teams moving through clarity and follow-through

You might thrive in this role if you

  • Bring 5+ years of engineering or technical deployment experience that includes customer-facing work
  • Have scoped and delivered complex systems in fast-moving or ambiguous environments
  • Write and review production-grade code across frontend and backend using Python, JavaScript, or comparable stacks
  • Have built or deployed systems powered by LLMs or generative models and understand how model behaviour affects product experience
  • Simplify complexity and make fast, sound decisions under pressure
  • Communicate clearly with engineers, product teams, and customer stakeholders
  • Spot risks early and adjust without slowing down
  • Model calm and judgment when the stakes are high

About OpenAI
OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.

We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

For additional information, please see OpenAI’s Affirmative Action and Equal Employment Opportunity Policy Statement.

Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.

To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.

We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link.

OpenAI Global Applicant Privacy Policy

At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.

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Backend Engineer

Senior Full-Stack Developer

Leonar

Parisfulltimesenior

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Описание вакансии

Licorne Society a été missionné par une startup/InsurTech en pleine croissance pour les aider à trouver leur Senior Full-Stack Developer.

Descriptif du poste
Le produit que nous construisons et mettons entre les mains des utilisateurs est la base de la proposition de valeur : offrir des parcours efficaces, transparents, et fiables lors de toutes les interactions avec le produit d’assurance, notamment lors de l’onboarding, et lors de la déclaration de sinistres.

En tant que senior full-stack developer, tes missions seront de :

  • Développer de bout en bout les fonctionnalités dont tu aura la responsabilité, et coordonner leur lancement et leur suivi avec le produit et les stakeholders
  • Utiliser ta vision technique pour identifier des opportunités et les partager avec le reste de l’entreprise
  • Participer à l’évolution de la vision technique commune

Le fonctionnement de notre équipe
Les membres de l’équipe gèrent leurs sujets de bout en bout et s’intéressent à toutes les technologies de la stack.

Comme il n’est pas possible d’être expert dans tous les domaines, nous recourrons souvent au pair coding sur les parties sur lesquelles nous sommes le moins à l’aise. L’approche sur les sujets complexes est souvent discutée à plusieurs avant de commencer à coder.

Les développeurs, le product designer et le product manager co-conçoivent les fonctionnalités et l’UI. On privilégie les séances de travail en pair dev / design pour être sûr de bien se comprendre et imaginer les meilleurs solutions possibles, à travers plusieurs itérations qui convergent vers le produit final.

On saisit toutes les opportunités d’améliorer nos outils et on reste à la pointe. La productivité qui en découle nous permet de rester dans un cercle vertueux. Notre stack est aujourd’hui composée de MongoDB, full stack TypeScript, tRPC, React, Emotion et Vite. Nos dépendances sont en permanence à la dernière version disponible.

Stack technique
Notre stack technique privilégie la sécurité des types et l’efficacité avec TypeScript. Nous utilisons React, Emotion, TanStack Router, et tRPC pour gérer l’état et la communication frontend-backend avec une forte sécurité des types.

L’infrastructure repose sur Kubernetes (GKE), Terraform, et ArgoCD pour l’hébergement et l’automatisation des déploiements. Les tests sont gérés par Vitest, Playwright, et Cucumber, avec des environnements éphémères via GitHub Actions pour les revues de code.

Les évolutions futures viseront à améliorer l’expérience développeur, optimiser la qualité et passer à une approche multi-cloud pour plus de robustesse et réduire les coûts.

Ton travail au quotidien

  • Investiguer et résoudre tout bug, crash, ou alerte qui se présenterait (politique zéro-bug)
  • Planifier, développer et mettre en production des évolutions fonctionnelles
  • Échanger avec notre Product Designer et notre Product Manager sur les aspects fonctionnels et UI du travail
  • Proposer des évolutions des éléments de framework quand le besoin se fait sentir
  • Faire évoluer notre UI Kit quand apparaît un nouveau composant ou une évolution
  • Challenger les solutions proposées, avoir de nouvelles idées, faire preuve de créativité
  • Avoir un comportement exemplaire et servir de modèle pour les futurs employés de l'entreprise : curiosité, humilité, recherche du feedback, créativité, engagement.

Profil recherché

  • Tu es à l’aise avec JavaScript et Node.js, et connais l’écosystème (la maîtrise de Typescript est un plus)
  • Tu as du recul sur les choix d’architecture, et sais raisonner dessus en fonction des objectifs business
  • Tu es autonome, sais t’auto-motiver, et as la capacité à t’auto-former
  • Tu t’intéresses aux autres équipes et as un fort intérêt pour le métier
  • Tu sais émettre des critiques constructives et apporter ta propre vision quand cela est pertinent
  • Tu es à la recherche de feedback dans un état d’esprit d’amélioration continue
  • Rapidité et efficacité sur les tâches de développement backend classiques, comme fournir au frontend des APIs implémentant la logique métier, s’appuyer sur les structures de données classiques pour manipuler des données, organiser les données en base, évaluer, choisir, et utiliser des APIs tierces parties, implémenter des tâches de fond
  • Maîtrise de HTML, CSS et React, ainsi que la capacité d’être force de proposition sur l’architecture du frontend

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Staff Site Reliability Engineer (x/f/m)Doctolib · France

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