Senior Data Scientist (Optimization & Machine Learning)
Justera Group is a trusted Swedish IT consulting and recruitment partner, delivering tailored technology solutions and top talent to help businesses innovate and grow.
About Justera Group
Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden.
About the Role:
We are seeking an experienced Senior Data Scientist with strong expertise in Linear Programming (LP) and Mixed Integer Programming (MIP) to develop, maintain, and scale production-grade optimization solutions. This role requires a solid foundation in optimization, analytics, statistics, and machine learning, along with the ability to build robust, production-ready data science solutions in a cloud environment.
The ideal candidate is an experienced Python developer who writes clean, modular, and maintainable code, possesses strong SQL skills, and enjoys collaborating with cross-functional teams to solve complex business challenges.
Key Responsibilities:
Maintain, optimize, and enhance existing optimization models by identifying opportunities for improvement and implementing scalable solutions.
Develop, deploy, monitor, and maintain production-grade optimization and machine learning solutions in a cloud environment.
Build and improve data preparation, transformation, and aggregation pipelines while integrating new data sources to enrich model performance.
Analyze model outputs and communicate insights and recommendations to business stakeholders.
Translate business requirements into technical solutions and maintain clear communication throughout the project lifecycle.
Collaborate closely with Data Scientists, Machine Learning Engineers, Product Managers, and other cross-functional stakeholders.
Implement and support MLOps best practices, including deployment, monitoring, automation, and model lifecycle management.
Perform ad hoc data analysis and create visualizations to support data-driven decision-making.
Ensure solution reliability, scalability, and operational efficiency through continuous monitoring and performance improvements.
Requirements:
Strong experience with Discrete Optimization, including Linear Programming (LP), Integer Programming (IP), and Mixed Integer Programming (MIP).
Proven experience developing and deploying machine learning solutions in production cloud environments, preferably Google Cloud Platform (GCP).
Advanced Python programming skills with experience writing clean, modular, testable, and production-ready code.
Strong SQL skills for data manipulation, transformation, and analysis.
Hands-on experience with MLOps practices and CI/CD pipelines.
Experience building scalable data wrangling, transformation, and aggregation pipelines.
Familiarity with dbt for data transformation workflows.
Experience working in Agile, cross-functional environments.
Excellent analytical, problem-solving, and stakeholder communication skills.
Ability to thrive in complex, fast-paced, and evolving business environments.
What We Offer:
A dynamic and innovative workplace driving advancements in cutting-edge robotic technologies
The opportunity to collaborate with talented cross-functional teams on meaningful and impactful projects
Competitive compensation and comprehensive benefits package
A supportive culture that fosters continuous learning, growth, and professional development
Flexible hybrid working model for an optimal work-life balance
25 days of annual leave to recharge and relax
An annual wellness allowance of 3,500 SEK to support your health and wellbeing
- Locations
- Stockholm
About Justera Group
Why Join Justera Group?
At Justera Group, we believe work is more than just a job – it’s a journey of growth, collaboration, and shared success. Our culture is built on trust, innovation, and balance, making us a place where people feel inspired to do their best work.
✨ A Culture That Inspires
We foster a supportive and inclusive environment where every voice matters. Ideas are celebrated, creativity is encouraged, and teamwork is at the heart of everything we do.
🌍 Hybrid Flexibility
Work-life balance is more than a promise – it’s our practice. With our hybrid model, you get the best of both worlds: meaningful in-person collaboration and the flexibility to thrive from anywhere.
💙 Employee Wellness First
Your well-being is our priority. From wellness initiatives to mental health support, we are committed to creating a workplace where you feel valued, energized, and cared for.
📈 Grow Together, Succeed Together
At Juster AGroup, your career path is filled with opportunities to learn, grow, and shine. We invest in your development because when you succeed, we all succeed.
Join us and be part of a community where people come first, ideas turn into impact, and together, we create a future we’re proud of.