Senior Data Engineer

Implicity

Paris

Hybrid

EUR 65,000 - 73,000

Full time

14 days+

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Benefits offered by this job

Health care

Luncheon voucher

Transport allowance

Job summary

Implicity, a digital MedTech, is seeking a Senior Data Engineer to join the Data Platform — Ingestion squad. You will design, build and operate ingestion pipelines that bring cardiac device data into Implicity's platform, handling millions of executions per day across dozens of types and serving hundreds of hospitals and patients.

Ideally you have 6+ years of production data engineering experience, strong Python/TypeScript skills, and hands-on AWS and workflow orchestration knowledge.

Qualifications

Master's degree in Computer Science, Data Engineering, or equivalent.
6+ years of experience designing and operating data pipelines in production.
Hands-on experience with both streaming and batch ingestion, from heterogeneous sources and APIs (Kafka, RabbitMQ, Kinesis, Pub/Sub, CDC, Spark, Beam or equivalent).
Hands-on experience with a workflow orchestrator you have implemented, extended or migrated (Dagster, Temporal, Airflow, Prefect, etc).

Responsibilities

Design, build and operate ingestion pipelines from heterogeneous cardiac device sources.
Design, implement and optimize ELT/ETL pipelines for reliable processing.
Own workflow orchestration: DAG design, retry, replay and backfill strategies, SLA definition.
Design and optimize data models and warehousing (PostgreSQL, AWS Athena or equivalent).
Ensure data quality, integrity and traceability across pipelines and distributed systems.
Deploy, monitor and operate the pipelines you build, including alerting, incident response and on-call rotation.
Contribute to technical decisions: evaluate and benchmark options, document trade-offs, and support tooling adoption.
Collaborate with Analytics, Product and Engineering teams to enable self-serve, data-driven decision-making.

Skills

Streaming ingestion

Batch ingestion

SQL

NoSQL databases

Python

TypeScript/Node.js

AWS

Kubernetes

Data modeling

Data governance

English/French communication

Education

Master's degree in Computer Science, Data Engineering, or equivalent

Tools

Dagster

Temporal

Airflow

Kafka

RabbitMQ

Kinesis

dbt

Parquet/Avro

Job description

About Us

Implicity is a digital MedTech, that brings outstanding innovations to cardiologists, thanks to Big Data and Artificial Intelligence.

Thanks to our leading cardiac remote monitoring platform, it's way easier to manage data and predict patient issues, so that cardiologists can bring the best care at the best time.

To put it simply, when you join Implicity, you'll contribute to save lives with us

Dr Arnaud Rosier (cardiologist and AI researcher) & David Perlmutter (engineer and entrepreneur), co-founded Implicity in 2016.

10+ years later, a French Start-Up / Scale-Up is a real game changer in the healthcare market, literally shaping the future of cardiology.
250+ hospitals / medical centers are already using our solutions, covering 100 000+ patients.

At Implicity, you will find the greatest experts in data science, engineering, clinical, regulatory, IT, sales, customers success, etc. working together.

This amazing team already managed to make Implicity a clear European leader, and we will very soon do the same in the US market.

In a nutshell, thanks to Implicity

Patients get a far better care
Doctors' life is far easier, they can have a far better focus on prevention/treatment, and not admin/data burden
Healthcare payers (Social Security in France) eventually pays a far lower price (preventing/monitoring instead of treating/hospitalizing)

It can start as soon as you can!

Job and recruitment context

Opening line

We are looking for a Senior Data Engineer to join our Data Platform — Ingestion squad. You will design, build and operate the pipelines that bring cardiac device data into Implicity's platform: around 2 million pipeline executions per day, across approximately 100 pipeline types, serving 250+ hospitals and 100,000+ patients. Our core engineering challenge is reliability and operability at high orchestration cardinality.

As a medical device manufacturer, we operate under regulatory requirements that directly shape how our data platform is designed: traceability, reproducibility and auditability are built-in constraints, and our ingestion pipelines sit on a clinically critical path where reliability has a direct impact on patient monitoring.

Our ingestion stack is currently being modernized: we are progressively replacing our orchestrator, Temporal has recently been selected. You will work on an existing system carrying live clinical traffic, which requires understanding and securing the existing platform before replacing its components.

Reporting Structure

Direct Report: Damien Parent (Data Manager)

Collaboration: Data Ingestion Squad

Your missions

As a Senior Data Engineer, you will design, build and operate the ingestion pipelines that feed Implicity's data platform, in a regulated HealthTech environment.

You will:

Design, build and maintain ingestion pipelines in both streaming and batch modes, from heterogeneous cardiac device sources
Design, implement and optimize ELT/ETL pipelines for efficient and reliable processing
Own workflow orchestration: DAG design, retry, replay and backfill strategies, SLA definition
Design and optimize data models and warehousing (PostgreSQL, AWS Athena or equivalent)
Ensure data quality, integrity and traceability across pipelines and distributed systems
Deploy, monitor and operate the pipelines you build, including alerting, incident response and participation in the team's on-call rotation
Contribute to technical decisions: evaluate and benchmark options, document trade-offs, and support the adoption of the squad's tooling
Collaborate with Analytics, Product and Engineering teams to enable self-serve, data-driven decision-making

Our Technical Environment

Cloud Infrastructure: AWS
Architecture: Microservices, event-driven patterns (RabbitMQ)
Primary Languages / Frameworks: TypeScript (Node.js, NestJS), Python
Ingestion & orchestration: Transitioning to Temporal
Analytics: AWS Athena, DBT, Dagster, Metabase
Containers & Orchestration: Docker, Kubernetes
CI/CD: GitLab CI
Observability: Prometheus & Grafana

Your Profile and Mindset

Experience Profile

Master's degree in Computer Science, Data Engineering, or equivalent
6+ years of experience designing and operating data pipelines in production
Hands-on experience with both streaming and batch ingestion, from heterogeneous sources and APIs (Kafka, RabbitMQ, Kinesis, Pub/Sub, CDC, Spark, Beam or equivalent)
Hands-on experience with a workflow orchestrator you have implemented, extended or migrated (Dagster, Temporal, Airflow, Prefect, etc), including retry, idempotency and backfill strategies
Solid understanding of SQL and NoSQL databases, including data modelling and query optimization
Strong backend engineering skills in at least one of: Python, TypeScript/Node.js, Java, Go or Scala. The squad works primarily in TypeScript and Python
Production experience on AWS or GCP (we run on AWS), with containerized deployments (Docker, Kubernetes)
Ability to design pipelines with traceability, audit trails and pseudonymisation in mind - knowing what was processed, when, and by which version of the transformation. Whether you learned this in a regulated industry or elsewhere does not matter to us

Production and operations

Experience taking a data platform to production and operating it over time: deployment, monitoring, alerting, incident management
Experience with observability tooling (Prometheus, Grafana, Datadog or equivalent) and with defining alerting on data pipelines
At least one experience in a micro-services architecture
Familiar with production development workflow (code reviews, branching models) and testing practices
Good documentation skills

Soft Skills

Fluency in both English (essential for team collaboration) and French (for local interaction) is required
Curiosity and AI usage: We actively embrace working with AI productivity tools such as Claude to solve problems, sharpen code quality, and maximize efficiency. Fully leveraging AI in our daily work is not just encouraged - it's an essential strength we cultivate
You enjoy working in a fast-paced and ever-changing environment
Strong work ethic & daily act with integrity, honesty and fairness
Definitely a thoughtful team player, looking to make your colleagues successful

Nice to have

Experience driving technical decisions within a team: evaluating options, benchmarking, and documenting trade-offs
Experience with large data volumes (Spark, Iceberg, lakehouse architectures)
Knowledge of Avro, Parquet or Protobuf
Already practiced TDD
Open source project development experience
Prior experience in a regulated environment (health data, finance, public sector), where traceability and audit trails are mandatory

A Note on Applying

We are looking for an experienced data engineer, but we know the perfect candidate doesn't exist. If you believe you possess the core required experience and strongly align with this mindset, we highly encourage you to apply.

Recruitment process

1st HR Contact with Astrid (Recruiter) – 30-45 min - Remote
Technical Test with Michaël and Max - 1h30-2h - On-site
Fit Interview with Louay (CTO) - 1 hour - On-site or Remote
Meet the Team – 1 hour - On-site or Remote
Reference Check & Offer (usually follows within 72 hours)

General information

Salary

For this job (full-time), you have a base salary depending on your experience between 65k€ and 73k€
Eligible for stock option (BSPCEs) according to the company's existing rules

Benefits