Ericsson
From Ericsson's careers page
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We are looking for an LLM Post-Training Engineer to own the process of making foundation models genuinely useful in our domain.
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## Join our Team
The AI Accelerator within BNEW SAN is on a mission to innovate, incubate, and deliver AI-based solutions that fundamentally redesign Customer Support and Network Deployment — shifting from human-led coordination to composable, agent-centric intelligence. We aim to move beyond simple efficiency gains to create a compounding cycle of optimization, where every interaction generates actionable insights that continuously refine operations, reduce time-to-market, and accelerate the journey toward autonomous network operations.
We are looking for an LLM Post-Training Engineer to own the process of making foundation models genuinely useful in our domain. Pretrained LLMs are powerful starting points — but it is post-training that transforms a general-purpose model into a reliable, domain-aligned agent capable of operating autonomously in the complex world of telecommunications. You will design and execute the training strategies, reward frameworks, and data pipelines that shape how our models reason, respond, and improve — closing the gap between what a model knows out of the box and what our agents need to do in production.
Domain Knowledge Injection via Fine-Tuning
Policy-Reward Training & Alignment
Automatic Dataset Curation & Synthetic Data Generation
Training Run Management & Experiment Tracking
Why join Ericsson?At Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build solutions never seen before to some of the world’s toughest problems. You´ll be challenged, but you won’t be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply?Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: Japan (JP) || Yokohama
Req ID: 787828