Graduate
Company Description
OASYS NOW is a privacy-by-design, AI-native healthtech company committed to enhancing precision medicine and clinical research by making them more inclusive, efficient, and secure. We develop cutting-edge AI solutions that empower hospitals and research institutions to maximize the value of their data while ensuring patient privacy. Our certified infrastructure (ISO 27001 & NEN 7510) ensures the safe deployment of AI in sensitive environments. We have been recognized with the
Dutch Data Privacy Award
and the
European AI Cybersecurity Award . We are the winners of
SLUSH 100
and featured in 10+ publications worldwide, including
Forbes 30 Under 30
Europe . Role Description This is a full-time hybrid role for a Full Stack Engineer (Mid-Senior) at OASYS NOW, located in Delft, with 1-day-a-week work-from-home flexibility. The Full Stack Engineer will be responsible for both front-end and back-end development tasks, software development, and full-stack development. The day-to-day tasks include designing, developing, and maintaining web applications, collaborating with cross-functional teams, and ensuring the performance, scalability, and security of the applications. The Team You’ll join a
small, fast-moving team of engineers
and a
product designer
led by our CTO,
Sara , partnering closely with product and domain experts to ship secure, reliable software in healthcare. We’re expanding to build new features and systems across our platform, including
GRIP
and
ELaiGIBLE , and creating new products. We’re looking for builders who want meaningful ownership as we scale. What You'll Do Ship end-to-end features across
frontend
and
backend . Design and implement
REST APIs,
integrate with data stores and internal services. Build reliable
data flows
and
background jobs , focus on performance and monitoring. Contribute to
event-driven
components and partner integrations. Uphold
security and privacy by default ; collaborate with product/security on least-privilege access and sane defaults. Own the lifecycle: clarify scope, design, implement, monitor, iterate. What You Bring Experience BSc/MSc
in
CS/SE
( 3+ years
building production web software with ownership) or
5+
years equivalent experience. Comfortable working across the stack (frontend + backend), with deeper strength in at least one area. Solid grasp of common software design patterns and their trade-offs. Solid understanding of client–server fundamentals, HTTP, and computer-network basics, familiarity with gRPC and WebSockets. Frontend & Backend Experience shipping with a modern
SSR/front-end framework
Next.js/React.js (or equivalent e.g., Nuxt.js/Vue.js). Hands-on with a
Node.js/Bun
backend framework NestJS (or equivalent e.g., Express, or Fastify), with knowledge of routing, CORS, validation, and testing. Proficient in
JavaScript/TypeScript, HTML/CSS
(with some knowledge of Tailwind CSS) ,
and comfortable in
Python . Proficient with software testing concepts (e.g., test types, mocking), and can apply these concepts with testing frameworks like Jest, Cypress, Playwright, PyTest, etc. Practical experience designing and consuming
APIs ; understanding versioning, pagination, and error contracts. Hands-on with
authentication & authorization
(SSO/OIDC/OAuth2), session/JWT handling, and role/permission models (RBAC/ABAC). Databases Experience with both
relational
(e.g., PostgreSQL/MySQL) and
document/NoSQL
databases (e.g., MongoDB), including indexing and data modeling trade-offs. Systems Experience with at least one major public
cloud
(AWS, Azure, or GCP). Containers
(e.g., Docker, Podman). CI/CD
(e.g.,
GitHub Actions ,
GitLab CI ) with automated pipelines. Baseline
observability
skills (logging/metrics, basic dashboards) and performance-minded development. Soft-skills Ownership & initiative:
You identify problems, propose pragmatic solutions, and drive them to completion. Communication:
Clear, direct, and respectful (written and verbal) with a bias to clarify scope and surface risks early. Collaboration:
Works well with product, design, and data/security partners; gives and receives feedback constructively. Judgment:
Balances speed and quality; knows when to iterate vs. when to harden. Reliability:
Transparent about blockers; follows through on commitments. Learning mindset:
Curious, reflective, and comfortable stepping outside your comfort zone. Nice-to-Haves Working knowledge of at least one
compiled language
(e.g., Go, C#, C++, Rust, or Java). Exposure to
LLM agentic systems
withtheir components (e.g.,
vector databases, retrieval/RAG, MCP , orchestration frameworks, knowledge graphs). Comfort with
infrastructure/architecture
topics (scalability, resiliency, security). Knowledge of
Infrastructure-as-Code
tools (e.g., Terraform, OpenTofu). Experience implementing
observability and monitoring
(metrics, logs, traces, alerting). Interest in
self-hosting
and developer tooling; ability to evaluate and operate open-source systems. Dutch language proficiency. Why OASYS NOW Mission with real-world impact in healthcare and clinical research. Autonomy and high ownership in a fast-moving, supportive team. Access to modern tooling and business subscriptions to leading AI platforms. Growth opportunities will arise as we scale, and your work will be visible and meaningful. If this role interests you, please send us your CV, even if you do not meet all the requirements. We are seeking passionate and motivated individuals. For any questions, contact us at engineeringcareers@oasysnow.com.
#J-18808-Ljbffr
Dutch Data Privacy Award
and the
European AI Cybersecurity Award . We are the winners of
SLUSH 100
and featured in 10+ publications worldwide, including
Forbes 30 Under 30
Europe . Role Description This is a full-time hybrid role for a Full Stack Engineer (Mid-Senior) at OASYS NOW, located in Delft, with 1-day-a-week work-from-home flexibility. The Full Stack Engineer will be responsible for both front-end and back-end development tasks, software development, and full-stack development. The day-to-day tasks include designing, developing, and maintaining web applications, collaborating with cross-functional teams, and ensuring the performance, scalability, and security of the applications. The Team You’ll join a
small, fast-moving team of engineers
and a
product designer
led by our CTO,
Sara , partnering closely with product and domain experts to ship secure, reliable software in healthcare. We’re expanding to build new features and systems across our platform, including
GRIP
and
ELaiGIBLE , and creating new products. We’re looking for builders who want meaningful ownership as we scale. What You'll Do Ship end-to-end features across
frontend
and
backend . Design and implement
REST APIs,
integrate with data stores and internal services. Build reliable
data flows
and
background jobs , focus on performance and monitoring. Contribute to
event-driven
components and partner integrations. Uphold
security and privacy by default ; collaborate with product/security on least-privilege access and sane defaults. Own the lifecycle: clarify scope, design, implement, monitor, iterate. What You Bring Experience BSc/MSc
in
CS/SE
( 3+ years
building production web software with ownership) or
5+
years equivalent experience. Comfortable working across the stack (frontend + backend), with deeper strength in at least one area. Solid grasp of common software design patterns and their trade-offs. Solid understanding of client–server fundamentals, HTTP, and computer-network basics, familiarity with gRPC and WebSockets. Frontend & Backend Experience shipping with a modern
SSR/front-end framework
Next.js/React.js (or equivalent e.g., Nuxt.js/Vue.js). Hands-on with a
Node.js/Bun
backend framework NestJS (or equivalent e.g., Express, or Fastify), with knowledge of routing, CORS, validation, and testing. Proficient in
JavaScript/TypeScript, HTML/CSS
(with some knowledge of Tailwind CSS) ,
and comfortable in
Python . Proficient with software testing concepts (e.g., test types, mocking), and can apply these concepts with testing frameworks like Jest, Cypress, Playwright, PyTest, etc. Practical experience designing and consuming
APIs ; understanding versioning, pagination, and error contracts. Hands-on with
authentication & authorization
(SSO/OIDC/OAuth2), session/JWT handling, and role/permission models (RBAC/ABAC). Databases Experience with both
relational
(e.g., PostgreSQL/MySQL) and
document/NoSQL
databases (e.g., MongoDB), including indexing and data modeling trade-offs. Systems Experience with at least one major public
cloud
(AWS, Azure, or GCP). Containers
(e.g., Docker, Podman). CI/CD
(e.g.,
GitHub Actions ,
GitLab CI ) with automated pipelines. Baseline
observability
skills (logging/metrics, basic dashboards) and performance-minded development. Soft-skills Ownership & initiative:
You identify problems, propose pragmatic solutions, and drive them to completion. Communication:
Clear, direct, and respectful (written and verbal) with a bias to clarify scope and surface risks early. Collaboration:
Works well with product, design, and data/security partners; gives and receives feedback constructively. Judgment:
Balances speed and quality; knows when to iterate vs. when to harden. Reliability:
Transparent about blockers; follows through on commitments. Learning mindset:
Curious, reflective, and comfortable stepping outside your comfort zone. Nice-to-Haves Working knowledge of at least one
compiled language
(e.g., Go, C#, C++, Rust, or Java). Exposure to
LLM agentic systems
withtheir components (e.g.,
vector databases, retrieval/RAG, MCP , orchestration frameworks, knowledge graphs). Comfort with
infrastructure/architecture
topics (scalability, resiliency, security). Knowledge of
Infrastructure-as-Code
tools (e.g., Terraform, OpenTofu). Experience implementing
observability and monitoring
(metrics, logs, traces, alerting). Interest in
self-hosting
and developer tooling; ability to evaluate and operate open-source systems. Dutch language proficiency. Why OASYS NOW Mission with real-world impact in healthcare and clinical research. Autonomy and high ownership in a fast-moving, supportive team. Access to modern tooling and business subscriptions to leading AI platforms. Growth opportunities will arise as we scale, and your work will be visible and meaningful. If this role interests you, please send us your CV, even if you do not meet all the requirements. We are seeking passionate and motivated individuals. For any questions, contact us at engineeringcareers@oasysnow.com.
#J-18808-Ljbffr