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Machine Learning Engineer, Applied AI

Pay
Pay not listed
Work setting
Remote — work setting source
Location type: Remote
From the employer’s posting
Employment
Full-time — employment source
Employment type: Full-time
From the employer’s posting
Team
ActAI Engineering › ActAI — team source
Department: ActAI Engineering › ActAI
From the employer’s posting

What you’ll work on

Full posting
  • Build and improve classification, ranking, retrieval and personalization models

  • Improve search relevance and context retrieval with embeddings, hybrid search and reranking

  • Develop evaluation pipelines, labeled datasets and metrics to measure model quality

  • Build and maintain ML training, inference and deployment pipelines

  • Debug production issues, monitor model performance and ship improvements

From the employer’s posting
Build and improve ML models for classification, ranking, retrieval and personalization.
Improve search relevance and context retrieval using embeddings, hybrid search and reranking.
Develop evaluation pipelines, labeled datasets and metrics to measure model quality.
Build and maintain ML training, inference and deployment pipelines.
Debug production issues, monitor model performance and ship improvements based on real-world feedback.

What you’ll bring

All qualifications

Core experience

  • Hands-on experience building and deploying ML models in production
  • Strong foundations in machine learning and modern neural architectures
  • Experience in classification, ranking, retrieval, recommendation or personalization
  • Understanding of model evaluation, experimentation and performance metrics
  • Comfortable writing production-quality code in Python, PyTorch or JAX
Qualification wording
Hands-on experience building and deploying ML models in production.
Strong foundations in machine learning and modern neural architectures.
Experience in classification, ranking, retrieval, recommendation systems or personalization.
Understanding of model evaluation, experimentation and performance metrics.
Comfortable writing production-quality code and working with real-world datasets.
Apply at Bjak

Posting record

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Status in our records
Live
First seen by us
Oct 16, 202621 days ago
Recorded sightings
67
Last seen by us
Nov 5, 2026

These dates show when we found the posting. Check the employer’s website to confirm it is still accepting applications.

How this job compares

Time since we first saw it

Day 21

Similar jobs usually come down between day 6 and day 71.

At Bjak, jobs usually come down by about day 45.

From 4,633 similar postings that came down, and 9 of Bjak’s. Coming down is not always a hire.

Bjak is hiring

85 open jobs

Open jobs by the week we first saw them, last 12 weeks.

  • ML Engineer hiring is steady
  • Its jobs tend to stay up a long time
  • 6% of open jobs were reposted
Hiring record

See how this role fits your experience

Add your resume and we’ll mark which of these tools you already use, and point out anything in the posting that could rule you out.

  • Python
  • PyTorch
Where the posting names them
Tech Stack - Python - PyTorch / JAX
- Python - PyTorch / JAX - Embeddings, vector search and ranking models

Your next step

Complete your application on jobs.ashbyhq.com. The employer’s form will show what is required.

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  • No account needed. “Autofill from resume” at the top of the form fills the key fields from your file.

Already applied? Track this application

Has Bjak posted this job before?

Yes. We’ve followed 11 other Machine Learning Engineer, Applied AI jobs there since October 2026. One came down after 14 days. 10 are still up.

  1. Place not statedStill up after 22 days, first seen Oct 16
  2. Orchard RoadStill up after 22 days, first seen Oct 16
  3. Place not statedStill up after 22 days, first seen Oct 16
  4. LondonStill up after 22 days, first seen Oct 16
  5. Place not statedStill up after 22 days, first seen Oct 16
  6. Place not statedCame down after 14 days, first seen Oct 16
  7. SeoulStill up after 22 days, first seen Oct 16
  8. WarsawStill up after 22 days, first seen Oct 16
  9. This jobUp 22 days so far, first seen Oct 16

Large employers often post one title for several teams, so these can be separate openings.

Demand for ML Engineer roles

New ML Engineer postings at the employers we follow are up 12% over the last 5 weeks compared with the 5 before.

Weekly new ML Engineer postings at the same employers, from the week of August 17 to the week of October 26. The fewest in a week was 624, the most 1,094, and the latest week had 870.
August 17Last week

Each bar is one week of new postings. The darkest bars are the last 5 weeks.

Counted from the hiring pages we’ve followed for at least five weeks, so employers we add don’t look like growth. Updated weekly.

About the role

We file this job under ML Engineer, by the work the posting describes.

ML engineers put machine learning models into products. They write the code that trains, ships, serves and monitors models so a recommendation or prediction works for real users.

Postings ask for strong Python and software engineering, a framework such as PyTorch, cloud services, and more and more often experience with large language models.

A data scientist often works out which model to build; an ML engineer makes it run reliably in production.

US government figures for computer and information research scientists

Median yearly pay, May 2025
$140,300
Expected change, 2025 to 2035
21.8% more jobsagainst 3.5% for all jobs

The government has no code for ML engineers, so these figures are for the closest group, computer and information research scientists.

Source: US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025) and Employment Projections (2025 to 2035). Occupation code 15-1221.

Job description

View original posting ↗

About

There are over 5 billion users using basic applications today such email, notes, tasks, calendar and they're not AI-native. Our mission is to build proactive applications for anyone in the world, who are not used to complex prompting. We aim to bring intelligence to conversations, errands, organising and workflows, with minimal to no prompting.

Our first application is an agent-first mobile communication app. We believe building applications that users use daily for communication, coordination and collaboration needs will help integrate AI into their lives. The net effect is to eliminate misinformation, achieve low coordination costs, enable high quality tasks and collaboration at scale with minimal or little prompting.

 

Role

Build and improve ML systems that power our AI-native applications.

Work on classification, retrieval, ranking, personalization and evaluation, taking ownership from model development to production deployment.

This role is for engineers who enjoy solving practical ML problems, improving model quality and shipping reliable systems used by real users.

 

Focus

  • Build and improve ML models for classification, ranking, retrieval and personalization.

  • Develop efficient classifiers and optimize model accuracy, precision, latency and cost.

  • Improve search relevance and context retrieval using embeddings, hybrid search and reranking.

  • Build personalization models that learn from user behavior while respecting privacy.

  • Develop evaluation pipelines, labeled datasets and metrics to measure model quality.

  • Fine-tune and adapt existing models when supported by sufficient data.

  • Build and maintain ML training, inference and deployment pipelines.

  • Debug production issues, monitor model performance and ship improvements based on real-world feedback.

 

Tech Stack

  • Python

  • PyTorch / JAX

  • Embeddings, vector search and ranking models

  • Production ML systems and inference pipelines

 

Ideal Experience

  • Strong foundations in machine learning and modern neural architectures.

  • Hands-on experience building and deploying ML models in production.

  • Experience in classification, ranking, retrieval, recommendation systems or personalization.

  • Understanding of model evaluation, experimentation and performance metrics.

  • Comfortable writing production-quality code and working with real-world datasets.

  • Able to balance model quality, latency, cost and reliability.

  • Strong ownership, problem-solving skills

 

Outcomes

  • ML models in production meet expected accuracy, relevance, latency and reliability targets.

  • Classification and ranking improvements deliver measurable gains in model quality.

  • Evaluation pipelines identify regressions and support reliable model releases.

  • Training, inference and data pipelines are robust, reproducible and maintainable.

  • Model improvements are driven by real-world feedback and measurable results.

  • Collaborates effectively with engineering and product teams to deliver reliable ML-powered features.

 

How We Work

The best products in the world are built by small, world-class teams. We are a high-talent-density, hands-on team. We make decisions collectively and move quickly, balancing high-quality work with continuous learning.

Joining our team requires the ability to bring structure, exercise judgment and execute independently. Our goal is to put a truly magical product into the hands of our users.

 

Interview Process

If there appears to be a fit, we'll reach out to schedule 3, but no more than 4 interviews.

Applications are evaluated by our technical team members. Interviews will be conducted virtually and/or onsite.

We value transparency and efficiency, so expect a prompt decision. If you've demonstrated the exceptional skills and mindset we're looking for, we'll extend an offer to join us.

Source details

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Location & working pattern

Portugal

- Develop efficient classifiers and optimize model accuracy, precision, latency and cost. - Improve search relevance and context retrieval using embeddings, hybrid search and reranking. - Build personalization models that learn from user behavior while respecting privacy.
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