Senior Python Engineer (AI)

Start date:
ASAP

Languages:
Fluent English required

Industry:
SaaS / MedTech

About The Role
Pragmatike is recruiting on behalf of a fast-growing SaaS company building a modern healthcare platform used by medical professionals. As the product continues to scale, the engineering team is expanding to support increasingly complex integrations, security requirements, and platform reliability.

We are looking for a
Senior Full Stack Engineer
with strong backend expertise in
NestJS
to help design, build, and scale the core platform. This is a highly technical, hands-on role where you'll own backend architecture, develop reliable distributed systems, and collaborate closely with frontend and product teams to deliver high-quality features.

The ideal candidate has a strong product mindset, thrives in startup environments, and actively leverages AI-assisted development to improve engineering velocity while maintaining high code quality.

Your Responsibilities

• Design, develop, and maintain scalable backend services using NestJS
• Architect APIs, caching layers, queues, and distributed services for high-performance SaaS applications
• Build and maintain integrations with third-party systems using REST APIs (SOAP experience is a plus)
• Collaborate closely with frontend and product teams to deliver end-to-end product features
• Improve application performance, reliability, scalability, and maintainability
• Contribute to engineering best practices, code quality, and technical architecture decisions
• Leverage AI-assisted development workflows to accelerate implementation, testing, and debugging
• Take ownership of features from design through production in a fast-moving startup environment

Required Qualifications

• 5+ years of experience building production SaaS applications
• Strong expertise with NestJS (mandatory)
• Experience with Redis, caching strategies, and queuing systems such as RabbitMQ or equivalent
• Strong experience with TypeORM
• Good knowledge of Next.js and Tailwind CSS
• Proven experience designing and integrating REST APIs
• Experience building scalable backend systems with asynchronous architectures
• Fluent English with strong communication skills
• Ability to effectively use AI coding assistants to accelerate development and debugging workflows. Familiarity with open-source AI frameworks and modern coding assistants such as Claude Code, Cursor, GitHub Copilot, Codex, or similar is a MUST.
• Ownership mindset with the ability to work independently in a remote-first environment

Preferred Qualifications

• French language skills
• Experience building Chrome Extensions
• Background in MedTech or Healthcare SaaS
• Knowledge of end-to-end encryption
• Experience integrating SOAP services alongside REST APIs
• Mobile development experience, particularly with React Native
• Experience introducing AI-assisted or agentic development workflows across engineering teams

AI-First Engineering
AI is an integral part of the engineering workflow. During the interview process, we'll explore how you use AI in real-world software development, including:

We're looking for engineers who use AI as a force multiplier for software quality, productivity, and problem-solving, not simply as an autocomplete tool.

Why Join Us

• Join a product-focused engineering team building technology that supports healthcare professionals
• Take ownership of core backend systems and influence technical architecture
• Work across modern backend infrastructure, frontend applications, and complex integrations
• Help shape engineering best practices in a fast-growing startup environment
• Collaborate with a highly technical, remote-first team focused on shipping high-quality software

Pragmatike is committed to a fair, transparent, and inclusive recruitment process. We do not discriminate based on age, disability, gender, gender identity or expression, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex, or sexual orientation.

In accordance with GDPR, your personal data will be processed lawfully, fairly, and securely, and used solely for recruitment purposes, including sharing it with our client(s) for employment consideration.

Start date:
ASAP

Languages:
Fluent English required

Industry:
SaaS / MedTech

About The Role
Pragmatike is recruiting on behalf of a fast-growing SaaS company building a modern healthcare platform used by medical professionals. As the product continues to scale, the engineering team is expanding to support increasingly complex integrations, security requirements, and platform reliability.

We are looking for a
Senior Full Stack Engineer
with strong backend expertise in
NestJS
to help design, build, and scale the core platform. This is a highly technical, hands-on role where you'll own backend architecture, develop reliable distributed systems, and collaborate closely with frontend and product teams to deliver high-quality features.

The ideal candidate has a strong product mindset, thrives in startup environments, and actively leverages AI-assisted development to improve engineering velocity while maintaining high code quality.

Your Responsibilities

• Design, develop, and maintain scalable backend services using NestJS
• Architect APIs, caching layers, queues, and distributed services for high-performance SaaS applications
• Build and maintain integrations with third-party systems using REST APIs (SOAP experience is a plus)
• Collaborate closely with frontend and product teams to deliver end-to-end product features
• Improve application performance, reliability, scalability, and maintainability
• Contribute to engineering best practices, code quality, and technical architecture decisions
• Leverage AI-assisted development workflows to accelerate implementation, testing, and debugging
• Take ownership of features from design through production in a fast-moving startup environment

Required Qualifications

• 5+ years of experience building production SaaS applications
• Strong expertise with NestJS (mandatory)
• Experience with Redis, caching strategies, and queuing systems such as RabbitMQ or equivalent
• Strong experience with TypeORM
• Good knowledge of Next.js and Tailwind CSS
• Proven experience designing and integrating REST APIs
• Experience building scalable backend systems with asynchronous architectures
• Fluent English with strong communication skills
• Ability to effectively use AI coding assistants to accelerate development and debugging workflows. Familiarity with open-source AI frameworks and modern coding assistants such as Claude Code, Cursor, GitHub Copilot, Codex, or similar is a MUST.
• Ownership mindset with the ability to work independently in a remote-first environment

Preferred Qualifications

• French language skills
• Experience building Chrome Extensions
• Background in MedTech or Healthcare SaaS
• Knowledge of end-to-end encryption
• Experience integrating SOAP services alongside REST APIs
• Mobile development experience, particularly with React Native
• Experience introducing AI-assisted or agentic development workflows across engineering teams

AI-First Engineering
AI is an integral part of the engineering workflow. During the interview process, we'll explore how you use AI in real-world software development, including:

We're looking for engineers who use AI as a force multiplier for software quality, productivity, and problem-solving, not simply as an autocomplete tool.

Why Join Us

• Join a product-focused engineering team building technology that supports healthcare professionals
• Take ownership of core backend systems and influence technical architecture
• Work across modern backend infrastructure, frontend applications, and complex integrations
• Help shape engineering best practices in a fast-growing startup environment
• Collaborate with a highly technical, remote-first team focused on shipping high-quality software

Pragmatike is committed to a fair, transparent, and inclusive recruitment process. We do not discriminate based on age, disability, gender, gender identity or expression, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex, or sexual orientation.

In accordance with GDPR, your personal data will be processed lawfully, fairly, and securely, and used solely for recruitment purposes, including sharing it with our client(s) for employment consideration.

Who are we?
Apex Wheels creates Real Performance wheels for drivers everywhere. That means designing and manufacturing wheels that don't just look the part, but truly improve performance in a measurable way. Born on the track and raised in California, Apex was founded in 2007 as a passion project by diehard motorsport enthusiasts and has produced function-first, race-proven wheels ever since. Now boasting a team of 40+ staff members, all Apex products are designed by an in-house team of engineers who are just as passionate about motorsports as you.

Objective
Take hands-on technical ownership of our ecommerce platform, working under the guidance of our CIO and with our eCommerce Director. Ecommerce is a critical engine of our growth, and your job is to make the site a modern sales engine rather than an aging machine that struggles to keep up. You will own architectural decisions for the platform end-to-end, from performance and reliability to the speed at which new features reach production. You will take ecommerce plans and make them real, on time, and on budget, because every delayed launch is growth we leave on the table.

Job Summary
You will be taking on a working ecommerce platform that supports real customers and real revenue, with a codebase that reflects years of accumulated work. Some of it is sound. Some of it is not. Your responsibility is to identify the difference through direct, hands-on engagement with the code and to implement the improvements yourself. This is a hands-on senior engineering role. The challenge is to materially improve a system that is already in production, while continuing to deliver new work in parallel.

The majority of your time will be spent writing and reviewing code. You will be the engineer who reads the existing implementation closely, refactors what is holding the platform back, and establishes the patterns that subsequent work will follow. When integrations between commerce, ERP, payments, content, and search behave unreliably, you will trace the issue end-to-end and implement the fix. When a deployment fails, you will be in the logs. When performance degrades, you will be the engineer running the profiler and identifying the actual cause. The technical standard of the platform will reflect the standard of the code you ship, because your work will set the precedent for others.

You will also review contributions from internal developers and external agencies, but review in this context means substantive engineering review. You will identify defects, missed edge cases, and shortcuts that will create cost later. You will provide specific, actionable feedback. When work requires significant revision, you will say so directly, and in many cases, you will be the one to implement the correction.

This job can work remotely from your home. Your core team works a combination of Central European and Pacific hours, so expect to work a schedule that best supports them.

You will work closely with the CIO and the eCommerce Director, contributing to day-to-day execution while helping ensure that technical decisions are sound and aligned with business needs. You will be expected to challenge assumptions, including those of external partners and internal contributors, when they conflict with platform health or critical business outcomes. When it comes to communicating with stakeholders, you should be able to explain your thinking, highlight tradeoffs, be transparent about unknowns, and the impact of your work. Your proactive communication on progress, status, and blockers will help you to gain the trust of our deeply passionate team, enabling you to grow to the next level in this role.

To start, you will be the only dedicated internal engineer on e-commerce, with oversight of external agencies and contractors as the primary form of leverage. We expect that this position will include people-management over time. What will not change is the expectation that you remain in the code - this is not a role that will evolve into pure delegation, and it is not a role for someone eager to stop building.

Once the foundation is stable, the focus moves toward feature delivery. Sales and marketing have a meaningful backlog of initiatives, and the measure of success becomes how quickly we can ship them to production at the appropriate level of quality. That is the return on the work: a platform on which the next change is easier than the last.

We are looking for an engineer who has held a similar position before. You have been the senior technical contributor on a platform of comparable complexity. You have been the person other engineers turn to when a problem is genuinely difficult. You have inherited a codebase with technical debt and improved it incrementally. You understand the work involved, and you understand that much of it is detailed and unglamorous. If you are looking for a clean slate or a role that keeps you removed from the code itself, this position will not be the right fit.

If it is the kind of challenge you have been looking for, the reward for doing it well is that the work shows. Internally, your contributions will move the company toward the targets it is planning to hit, and the teams that rely on the platform will tell you when something you built made their job more impactful. Externally, our customers are passionate about our products and are quick to share when the experience lands well, and you will know that the experience they are talking about is one you helped create.

How To Apply
In the space provided for your cover letter, tell us about your connection to automotive or motorsports culture. If you're not an enthusiast, tell us what you are most passionate about outside of your professional work.

Responsibilities

• Own the execution of the technical direction, quality, and uptime of our ecommerce platform and its integrations. The eCommerce Director will help you keep business objectives sharp and prioritized. The CIO will help you navigate technical boundaries and the standards that apply across the company.
• Lead the backend of our platform (Magento 2 implemented by an experienced contractor) side through substantive review: setting quality gates, holding the work to schedule, and stepping into the code when a decision needs senior judgment.
• Write, review, and ship our front-end code (Vue 3 and Nuxt for storefront, Sanity for content) alongside our partnered agency, and drive the work to reduce technical debt through whatever means make sense, including refactoring, replacing patterns, and over time bringing more of the work in-house as we grow the internal team. This is the area where the platform is actively expanding and where the technical debt is most visible.
• Own the integrations between Magento and the systems it depends on, including ERP (NetSuite), payments, OMS, PIM, and CMS. Real ecommerce problems will come to you: checkout friction, returns workflows, performance bottlenecks, data consistency, and third-party reliability. You will take loosely defined problems, define constraints and tradeoffs, and turn them into clear technical approaches.
• You will be involved when production issues arise, and you will contribute to improving monitoring, deployment, and reliability over time. Conduct substantive engineering review on code from internal contributors and external agencies: catching defects, missed edge cases, and shortcuts that will create cost later, and giving specific, actionable feedback. You will push back on external recommendations that conflict with platform health or long-term business outcomes
• Help establish and reinforce standards for code quality, documentation, and development workflows, so rework drops and predictability rises. The goal is lightweight, effective processes that scale as the team grows
• Eventually, we see this role including direct people-management responsibilities, including hiring, performance management, exiting, and everything in between
• Other duties as assigned

Requirements

• 5+ years of professional software engineering experience, with at least 3 years building and operating complex ecommerce platforms at scale (Magento 2, Adobe Commerce, Shopify Plus, BigCommerce, or equivalent), and meaningful, recent ecommerce work - not a strong background that has since gone stale. Generalist backgrounds without current ecommerce depth will not be a fit
• Strong in JavaScript and TypeScript, with hands-on experience shipping production work in Vue 3 and Nuxt, or a comparable framework such as Next and React. Production experience with a headless CMS, ideally Sanity.
• Demonstrable experience with a headless or decoupled frontend architecture integrated with a commerce backend. Experience integrating ecommerce platforms with ERP systems (NetSuite is a plus; SAP, Dynamics, Salesforce, or similar are acceptable) and a track record of owning multi-system integrations across payments, OMS, PIM, search, and CDP
• Hands-on experience with caching at the platform level, including Varnish, Redis, or equivalent.
• Solid, practical grounding in CI/CD, code review, monitoring, and incident response. Theory is not enough
• A solid understanding of UI and UX principles, with the ability to evaluate frontend work on more than just whether it functions. You do not need to be a designer, but you should care about the experience the code produces
• Experience working with external agencies and vendors, including scoping work, reviewing deliverables, and pushing back on weak recommendations. The role is built around this dynamic, so a track record of doing it well matters
• Familiarity with PHP and Magento 2 is a plus, sufficient to follow the code, weigh in on architectural decisions, and review work from the backend contractor. You do not need to be a Magento specialist. Most backend implementation is handled by an experienced contractor, and your role on that side is to hold the line on quality, schedule, and direction
• Additional pluses include early technical leadership (tech lead on a squad, mentoring, or running code review culture), Magento 2 frontend modernization experience such as Hyvä or PWA Studio, and background with Elasticsearch or Algolia
• Be legally authorized to work as a self-employed contractor or through your own registered business entity in your country of residence. Be able to invoice a U.S. company directly or through your business entity. Have reliable high-speed internet and a dedicated workspace.
• Ability to read, write, speak English to C2, C1 proficiency
• Ability to work with a geographically dispersed team with a work schedule that supports collaboration with individuals in the Central European and Pacific time zones

Benefits

• $35 - $48 USD hourly. This is a long-term independent contractor position supporting a U.S. based company directly; you will not have multiple clients in this position. Highly qualified candidates with skills and experience beyond the requirements and compensation of this role are invited to apply for consideration
• We believe everyone performs at their best when they have time to rest and recharge. We've established an hourly rate designed to give you the flexibility you need as part of running your business
• We are open to candidates located throughout Europe, and potentially beyond, but will give strong preference for Poland and Croatia.
• Motorsports lifestyle benefits to get you involved in the community as deeply as you'd like. Think reimbursements for event spectator tickets, karting and karting school, sim racing gear, track day insurance, SCCA compliant gear, and premium events like DirtFish and SkipBarber. Plus, huge employee discounts on our products and free merch!
• A modern professional work environment supported through remote work, almost anywhere in the contiguous U.S. and Europe, and casual in-office dress (t-shirts and jeans are normal for us). Our in-person company events often include sim-racing, karting, spectator events, and visits to some of our favorite places in Northern California
• Travel Expectations: Infrequent international/domestic travel
• About the Environment: While performing the duties of this job, you may be regularly required to stand, sit, talk, hear, reach, stoop, kneel, and use hands and fingers to operate a computer, telephone, and keyboard. Specific vision abilities required by this job include close vision requirements due to computer work. Ability to sit at a computer terminal for an extended period. Light lifting may be required. Ability to travel by ground or air to attend team-building events. Regular, predictable attendance is required

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
⭐️ We need you ⭐️
At
Implicity
, we are on a mission to transform cardiology care with cutting-edge MedTech solutions powered by Big Data and Artificial Intelligence. Our platform enables cardiologists to manage vast amounts of remote patient data, anticipate patient issues earlier, and deliver life-saving care at the right time.

We're currently hiring our
Head of Product
! We're looking for the
visionary
to
own
and
scale
our
product
!

🤝 Reporting Structure

• Direct Report: Arnaud Rosier (CEO).

Acting as stakeholder, you will:

🥉
Missions

• Define and execute the product vision, guiding the roadmaps of different teams, in order to achieve our business objectives.
• Ensure roadmap delivery and optimize team performance.
• Lead, structure, and grow the Product Team (PM, Designer).
• Be the voice of the user and advocate for product co-construction.
• Lead cross-functional and cross-scope initiatives.

🥈
Accountabilities:

• Product Vision & Strategy:

• Define and champion the product vision and strategy for the company, particularly at the Executive Committee (Codir level).
• Monitor KPIs and define activities contributing to the OKRs.

• Execution & Roadmap:

• Translate the product strategy into a prioritized and realistic roadmap, in collaboration with the PMs of different teams and various business stakeholders.
• Support PMs and PrDs in defining their specifications (user research, prototyping, testing, etc.).
• Collaborate closely with the CTO & Deputy CTO, and development teams to ensure efficient, high-quality, and predictable delivery of new features.

• Management & Product Culture:

• Lead and develop the Product Team (Product Management, Product Design).
• Implement and optimize product methodologies and processes (prioritization, specifications, cross-team communication).
• Establish and nurture a "customer-centric" and "data-informed" culture within the team (and the company).

• Cross-functional Influence:

• Work in strategic partnership with the CMO to define positioning, messaging, and product launches (Go-to-Market).
• Serve as the key point of contact for the Codir on all matters related to product strategy.
• As a Product Leader, take ownership of new emerging topics that do not fall under existing scopes, to launch and drive them forward.

🥇
Experience & Profile:

• Confirmed Product Leadership Experience: You have significant experience (10+ years) in SaaS product, with at least one successful experience as a Product Leader (CPO / VP Product / Head of).
• You have significant experience in HealthTech or a regulated environment.
• You are an "entrepreneur" at heart. You enjoy taking ownership of a topic and driving it to completion, whether directly or indirectly.
• Strategic Visionary: You know how to build an ambitious product vision, connect it to business goals, and communicate it in an inspiring way. You don't just execute; you define the direction and know how to build the organization to achieve it.
• You have a strong business acumen. You define the Product as "solving user problems to positively impact the business."
• Operational Excellence: You have a perfect mastery of modern product management methodologies and have successfully scaled a team and product processes. You know how to make a Tech & Product team collaborate effectively.
• Technical and Data Acuity: You possess a solid understanding of the technical challenges related to SaaS platforms, APIs, and AI. You are "data-driven" and know how to use data to inform decisions and measure impact, but you can avoid "data-paralysis" through your intuition and experience.
• Leadership through Influence: You are an exceptional communicator, capable of collaborating with all types of stakeholders (engineers, doctors, sales, C-level) and building consensus around the product vision, strategy, and its execution into a roadmap.
• Deep User Empathy: You have a genuine obsession with understanding your users' problems.

At Implicity, you will have a weekly meeting with your manager, to help you succeed in your mission, and continuously improve your skills.

Each team works with quarterly OKR, to be crystal clear, fair and honest with your targets.

The annual appraisal is a shared exchange moment, focused on your development.

Recruitment process

• 📞 1st HR Contact with Astrid or Margot (Hiring team) – 30-45 min
• 🧠 Case with Chiara, Julien or Louay (Deputy CTO & CTO) and/or Anne Vinas (Head of CSM)- 1h30/2h - On-site
• 👪 Team meeting Product Managers and Product Designer - 1h - On-site/Remote
• 🤝 Final interview with Arnaud (CEO) and Lucie (COO) - 1 hour - On-site
• 📞 Reference Check & Offer (usually follows within 72 hours 🤞)

Depending on your availability, the recruitment process should last less than 6 weeks.

General information
💰
Salary

• For this job (type of contract), you have a base salary (90-100k€) depending on your experience
• Employees stock option plan (BSPCE) subject to customary conditions

👍 Benefits

• Health care plan: Alan (40€ / month + 25€/month for kids)
• Luncheon voucher: 9€ (50% employer)
• Transport: 50% of your pass OR sustainable mobility pass

📍 Remote work & Location

• 3 days per week (progressively)
• Location: 29 rue du Louvre, 75002, PARIS