Machine Learning Engineer: Ranking & Personalization
- Salary
- $80k - $120K
- Level
- Mid
- Work type
- Remote Β· EMEA
Not stated in the posting: visa.
Open. First seen 22 September 2026.
About the role
About the Team
Launched in 2019, Constructor is an AI-first ecommerce search and discovery platform that helps shoppers find the right products at the right time and enables leading global e-commerce brands to drive meaningful revenue and conversion gains.
As a member of the Personalization team, you will improve the e-commerce experience for hundreds of millions of users across the world by designing, delivering & maintaining high-load real-time services in close collaboration with great engineers both within the team and across other teams such as the Ranking team. The general goal of the Personalization team is providing best-in-class personalization for all e-commerce experiences provided by Constructor. The job can consist of, but is not limited to:
- Improve personalized experience across different products, domain verticals and platforms
- Improve business KPIs by validating hypotheses around personalization
- Research different personalization approaches to provide the best outcome to the business
- Model user interactions to provide the best experience to shoppers
- Collaborate with technical and non-technical business partners to develop and update personalization capabilities
- Communicate with stakeholders within and outside the team
We love working together to help each other succeed, and are committed to maintaining an open, cooperative culture as we grow. We get to the right answer with empathy, ownership and passion for making an impact.
Requirements
Hard skills
- 3+ years of professional experience in applied machine learning
- Proficiency with Python, SQL and the big data stack for end-to-end ML product development
- Experience building, shipping, and maintaining personalization / recommender / ranking systems in production
- Experience with any of the major public cloud platforms will be a plus
- Experience with design and analysis of A/B tests
- Great skills delivering & communicating business value to stakeholders
Soft skills
- Excellent English communication skills
- Experience collaborating in cross-functional teams
- Ability to deep dive into problems and provide actionable outcomes
- Ability to work autonomously and independently
- Proactivity
Benefits
- π§ Work with smart and empathetic people who will help you grow and make a meaningful impact.
- π Regular team offsite events to connect and collaborate.
- π Fully remote team - choose where you live.
- ποΈ Unlimited vacation time - we strongly encourage all of our employees take at least 3 weeks per year.
- ποΈ Work from home stipend! We want you to have the resources you need to set up your home office.
- π» Apple laptops provided for new employees.
- π§βπ Training and development budget for every employee, refreshed each year.
- πͺ Maternity & Paternity leave for qualified employees.
- π΅ Base salary: $80kβ$120K USD, depending on knowledge, skills, experience, and interview results
- π Stock options - offered in addition to the base salary
Constructor's standard text
Diversity, Equity, and Inclusion at Constructor
At Constructor.io we are committed to cultivating a work environment that is diverse, equitable, and inclusive. As an equal opportunity employer, we welcome individuals of all backgrounds and provide equal opportunities to all applicants regardless of their education, diversity of opinion, race, color, religion, gender, gender expression, sexual orientation, national origin, genetics, disability, age, veteran status or affiliation in any other protected group.
Studies have shown that women and people of color may be less likely to apply for jobs unless they meet every one of the qualifications listed. Our primary interest is in finding the best candidate for the job. We encourage you to apply even if you donβt meet all of our listed qualifications.
How we handle your data. By submitting this application, you acknowledge that Constructor will collect and process the personal data you provide for the purpose of evaluating your candidacy for this role. If you are not selected, we will retain your data for a limited period as described in our Recruitment Privacy Notice. After that period your data will be deleted or anonymized.
What this role asks for
Standard for data science / ML roles
Machine Learning Β· Python Β· SQL
Common in data science / ML postings at any company.
70% of this description is written for the role. The rest is Constructor's standard text, folded away below.
Read against Constructor's other open postings on this site.
The team: Engineering HIRES STEADILY
This role is one of 21 open in Engineering. 6 were posted in the last 30 days and the oldest in May: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (15 of 21), LLM (12 of 21), SQL (9 of 21), AWS (7 of 21), JavaScript (7 of 21), Machine Learning (5 of 21), ClickHouse (4 of 21)
OTHER ROLES ON THIS TEAM
- Technical Integration Specialist (EMEA) posted Oct 16
- Integration Engineer (EMEA) posted Oct 16
- Technical Integration Specialist (AMER) posted Oct 16
- Integration Engineer (AMER) posted Oct 16
- Staff Backend Engineer - Search Features & APIs (SABR) posted Oct 8
- FullStack Engineer - Prospect UI Solutions posted Sep 3
- Engineering Manager - Customer Developer Experience posted Aug 19
- Platform Engineer: Platform Enablement posted Aug 10
- Senior Backend Engineer: Machine Learning Infrastructure posted Aug 6
- Senior Analytics Engineer posted Jul 30
- Senior Product Analyst posted Jul 30
- Senior Data Scientist posted Jul 30
- Full Stack Engineer: Retail Media posted Jul 14
- Senior Backend Engineer: Offsite Search Optimisation posted Jul 6
- BackEnd Engineer: Experiments posted Jul 6
- Senior Machine Learning Engineer: ML Recall posted Jun 4
- Software Engineer: Core posted Jun 4
- Senior Machine Learning Engineer: Search Quality posted Jun 2
- Backend Engineer: Retail Media posted May 26
- Senior Data Analyst: Multiple Teams posted May 25
From the team and dates on Constructor's own job board.
See Machine Learning Engineer salaries in Remote β
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