Referso Jobs

Senior - Operation Research Consultant

Sia · Posted Nov 12, 2026

Open

Paris, Île-de-France, France +8 more
Hybrid
Full-time · Senior
Un salaire compétitif

Senior - Operation Research Consultant

Sia · Posted Nov 12, 2026

Open

Paris, Île-de-France, France +8 more
Hybrid
Full-time · Senior
Un salaire compétitif

AI Specialist II

Primary Talent Partners · Posted Nov 11, 2026

Open

Charlotte, North Carolina, United States
On-site
Contract · Mid
$81–$91 per hour
5+ years

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Design, build, test, and support optimization models and services to build the optimization engine for Capital Investment Planning & Prioritization Tool (CIPT).

Compensation

$81.00 - $91.00/hr; W2 contract, no PTO, no Benefits. ACA-compliant supplemental package available for enrollment.

Responsibilities

Translate capital planning business rules into mathematical optimization models
Formulate, implement, and tune MILP models using Python modeling frameworks such as Pyomo or PuLP, with commercial and open-source solvers such as Gurobi, HiGHS, or CBC
Implement weighted value functions that combine benefit measures into optimization objectives
Design and build the scenario optimization workflow
Build a deterministic run harness that guarantees reproducible results

Requirements

Associates degree in Information Technology or Other Related Degree
Nice to have: Operations Research
Nice to have: Software Engineering
Nice to have: Secure Coding Practices
Nice to have: Technical Requirements Gathering

Skills

Mixed-Integer Linear Programming Mathematical modeling Python

Software Engineer - Traffic Capacity & Performance

Meta · Posted Nov 3, 2026

Open

Menlo Park, California, United States
On-site
Full-time · Senior
7+ years

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The role involves building and extending large-scale simulations of global traffic placement, solving capacity planning as constrained optimization, building production forecasting for peak demand, and leading technical direction across multiple teams.

Responsibilities

Build and extend large-scale simulation of global traffic placement: how traffic shifts across edge sites as demand grows and as sites, peering links and backbone paths fail.
Work with the load-balancing team on simulation fidelity and performance, and validate results against production behavior and live failure tests
Formulate and solve capacity planning as constrained optimization: where to add compute, peering and caches, given space, power, supply, latency and failure constraints.
Build and tune the solvers
Plan capacity for the browsers, proxies and caches Meta's services and AI agents use to reach the internet, and find which one becomes the bottleneck as Meta's internet access needs grow.

Requirements

Bachelor's degree in Computer Science
Bachelor's degree in Computer Engineering
Bachelor's degree in relevant technical field
PhD in operations research
PhD in computer science

Skills

Python C++Java

Operations Research/Data Scientist

Just Eat Takeaway.com (Takeaway.com) · Posted Nov 5, 2026

Open

Berlin, Germany

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As an Operations Research/Data Scientist on the Assignments team, you will help build, maintain, and scale the algorithms/models that power our global delivery network.

Responsibilities

Build, maintain, and scale algorithms/models for the global delivery network
Collaborate with senior scientists and software engineers to translate business rules into mathematical formulations
Build predictive models that inform dynamic parameters
Ship production-ready Python services
Take ownership of discrete algorithmic components

Skills

combinatorial optimization Mixed-Integer Programming Vehicle Routing Problems heuristic search methods statistical methods machine learning supervised learning unsupervised learning Python

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