Senior Full-Stack Developer

Posted Yesterday
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Hiring Remotely in Warsaw, Warszawa, Masovian, POL
In-Office or Remote
Senior level
Software
The Role
Design, build, and maintain cloud-native full-stack web applications with a backend and scalability focus. Implement AI-powered features, microservices, event-driven systems, RESTful APIs, and secure, observable services. Collaborate across product, UX, and engineering, contribute to architecture, CI/CD, and engineering best practices.
Summary Generated by Built In
Company Description

Are you passionate about building scalable products that contribute to innovation in healthcare and life sciences? We are looking for a Senior Full Stack Software Developer to join a long-term remote project focused on scientific computing, AI-powered workflows, and cloud-native engineering.

You will become part of a distributed European team developing a modern platform that helps pharmaceutical companies and researchers accelerate medicine development and improve analytical and regulatory processes. The role combines complex Back-end challenges, modern Front-end development, and opportunities to work with AI-driven features and distributed systems.

We at Sigma Software value engineering excellence, collaboration, and continuous learning. Joining our team means working with modern technologies, contributing to meaningful products, and having the freedom to influence technical decisions in a supportive professional environment.

CUSTOMER

Our Customer is a Europe-based company operating in the pharmaceutical and life sciences domain. The company is developing advanced digital solutions that support pharmaceutical organizations and researchers in managing and analyzing mathematical and computational models used in medicine development and research workflows.

PROJECT

The project focuses on building a cloud-native platform that combines scientific computing, data analysis, and AI-powered workflows. The solution enables users to upload, store, visualize, and analyze complex computational models while supporting technical and regulatory processes within the pharmaceutical industry.

The platform leverages modern distributed architecture and provides engineers with opportunities to work on AI-powered features, event-driven systems, scalable APIs, and cloud-native services.

Job Description

  • Develop and maintain modern Full Stack web applications with a strong focus on Back-end architecture and scalability
  • Design and implement AI-powered features and intelligent workflows
  • Build and operate reliable, secure, and scalable cloud-native services
  • Collaborate with product managers, UX designers, architects, and engineering teams
  • Participate in architecture discussions and technical decision-making
  • Develop and maintain RESTful APIs and service-to-service communication
  • Implement microservices and event-driven architecture patterns
  • Ensure application reliability, observability, security, and performance
  • Contribute to CI/CD processes and engineering best practices
  • Promote engineering excellence and AI adoption within development teams

Qualifications

  • At least 5+ years of commercial experience in software development 
  • Strong proficiency in JavaScript and TypeScript
  • Hands-on experience with React and Next.js in production environments
  • Strong experience with NestJS and scalable API design
  • Commercial experience with Go OR strong experience with Python ecosystem technologies
  • Experience with FastAPI, SQLAlchemy, pandas, numpy, and related Python tooling
  • Solid understanding of microservices architecture and event-driven systems
  • Experience with PostgreSQL and ORM tools such as Prisma
  • Practical experience with Docker and Kubernetes
  • Experience with NATS.io or similar messaging technologies
  • Experience integrating IAM/SSO solutions such as Keycloak
  • Strong understanding of RESTful APIs and distributed systems
  • Knowledge of application security best practices
  • Experience working with CI/CD pipelines and Git
  • Strong analytical and problem-solving skills
  • Ability to work independently and collaborate effectively in cross-functional teams
  • Upper-Intermediate or higher level of English

WILL BE A PLUS:

  • Experience in pharmaceutical, biotech, healthcare, or scientific research domains
  • Experience working with computational or mathematical modeling platforms
  • Familiarity with AI/ML integrations in enterprise applications
  • Experience with regulatory or compliance-driven systems
  • Experience with scientific or analytical data visualization
  • Familiarity with R for research or analytical purposes

Additional Information

PERSONAL PROFILE:

  • Proactive and ownership-driven mindset
  • Strong collaboration and communication skills
  • Ability to work effectively in complex technical environments
  • Interest in modern AI technologies and innovation
  • Focus on engineering quality and continuous improvement

Skills Required

  • At least 5+ years of commercial software development experience
  • Proficiency in JavaScript and TypeScript
  • Hands-on experience with React and Next.js in production
  • Strong experience with NestJS and scalable API design
  • Commercial experience with Go OR strong experience with Python ecosystem technologies
  • Experience with FastAPI, SQLAlchemy, pandas, numpy, and related Python tooling
  • Solid understanding of microservices architecture and event-driven systems
  • Experience with PostgreSQL and ORM tools such as Prisma
  • Practical experience with Docker and Kubernetes
  • Experience with NATS.io or similar messaging technologies
  • Experience integrating IAM/SSO solutions such as Keycloak
  • Strong understanding of RESTful APIs and distributed systems
  • Knowledge of application security best practices
  • Experience working with CI/CD pipelines and Git
  • Upper-Intermediate or higher level of English
  • Strong analytical and problem-solving skills
  • Ability to work independently and collaborate effectively in cross-functional teams
  • Proactive and ownership-driven mindset
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The Company
HQ: New York, New York
1,516 Employees

What We Do

Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters

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