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Senior ML Engineer

Czech Republic
Full-time
Permanent employee

Your mission

About StockStory


Index.dev is partnering with StockStory (CNBC / VERSANT) to hire a Senior AI Engineer in Prague.


VERSANT is an independent, publicly traded company that brings together powerhouse brands such as CNBC, MS NOW (formerly MSNBC), USA Network, Oxygen, E!, SYFY, and Golf Channel along with dynamic digital and direct-to-consumer brands such as Fandango, Rotten Tomatoes, GolfNow, GolfPass, and SportsEngine.


StockStory, now part of CNBC under VERSANT, is building the next generation of AI-powered equity research for individual investors. This is a chance to build products that can shape how millions of consumers understand markets and make investing decisions.


We offer the best parts of a startup environment — small team, high ownership, fast execution, and room to experiment — with the backing and stability of VERSANT, an independent publicly traded media company.


As an AI engineer, you will work on both an existing AI product with real user impact and greenfield projects with significant room for exploration. The work spans cutting-edge LLMs / ML, large-scale data systems, financial reasoning, and research tooling, with opportunities to apply ideas from functional programming and graph-based systems where they create real advantage.


You will be joining a team of exceptional engineers, analysts, and investors working at the intersection of AI and public markets. A particularly rare part of this role is the level of direct access to experienced market professionals, including former hedge fund managers and top-tier analysts, whose insights can directly inform how you think about modeling, signals, and product design.


The Role


We're looking for a highly capable Senior ML Engineer to join our team to build the next generation of AI-powered equity research.


This role is for engineers who enjoy turning machine learning and AI capabilities into reliable product systems used by real customers at scale. It is especially well suited to people who want to work across the full stack of applied ML, from data pipelines and model training to inference, evaluation, and production operations.


You will design, build, and operate core components of our AI platform: production-grade ML systems, LLM workflows, and supporting infrastructure that power core user experiences for individual investors.


This role sits within a small and growing, high-caliber team where individuals are expected to operate with a high degree of ownership and autonomy, contributing directly to core product, engineering, and modeling decisions while working closely with senior leadership in a highly collaborative, low-bureaucracy environment with direct access to decision-makers.


A genuine interest in investing, public markets, and fundamental business analysis is expected.

Your profile

What We're Looking For


  • Bachelor's degree in Computer Science or equivalent practical experience

  • 5+ years of experience in software engineering with a focus on machine learning or AI systems

  • Experience building and operating production ML systems

  • Strong proficiency in Python, TypeScript, or Java

  • Proven experience with LLMs, ranking or recommendation systems, search, or applied NLP

  • Solid understanding of modern ML techniques, including deep learning and representation learning

  • Experience contributing to system design and technical decision-making


What You'll Do


  • Design, implement, and maintain production ML and AI systems used at scale

  • Own end-to-end delivery of AI features from data pipelines and training workflows to inference and monitoring

  • Contribute to architectural decisions and technical standards and mentor peers to elevate ML quality

  • Solve complex technical problems with moderate ambiguity and strong business impact

  • Participate in code reviews and incident retrospectives to improve system quality and reliability

  • Support the team's overall technical growth

  • Identify and mitigate risks in AI systems, including performance regressions, bias, and operational issues

  • Use and improve model lifecycle management, monitoring, and evaluation frameworks


Desirable Skills & Experience


  • Hands-on experience with neural networks, including CNNs, RNNs, Transformers, or other deep learning architectures

  • Background in classical and modern NLP techniques such as tokenization, sequence labeling, language modeling, embeddings, text classification, and information extraction

  • Experience with training pipelines using frameworks such as TensorFlow or PyTorch

  • Experience building human-in-the-loop training or evaluation workflows


Location


Hybrid — 4 days on-site in Prague, Czech Republic / 1 day remote.


About us

Index is a UK-based company providing end-to-end remote-work services, powered by our digital platform. We help leading companies like GoEuro, Vodafone, Venly, YC startups, and 100 more companies to scale their engineering team by finding and managing high-performing tech talent.

The company was founded 2019 and headquartered in London. We unite top engineering talent from around the world and connect them with innovative companies seeking high-performing teams.

It was co-founded by an Oxford alumnus and tech executive with a track record of building successful global teams and scaling output rapidly.

Why Join Index.dev

We are officially recognized by the Financial Times as one of Europe’s fastest-growing companies: in 2024 we ranked 29th overall and 6th in IT & Software among the FT 1000.

We scale faster than market average — enabling us to offer frequent, meaningful opportunities for those who perform.

From Talent Marketplace to Full-Service Software Powerhouse

In October 2025 we completed the acquisition of Codemotion — a seasoned, U.S.-based custom software development company with a 60+ strong engineering team, decades of enterprise-project experience, and clients such as NASA, Neom, and MongoDB.

This strategic move transforms us from a talent-matching platform into a full-fledged software delivery partner: end-to-end solutions, from MVP to production, including CTO-level leadership, project management, design, QA, and scalable engineering teams.

As a result — along with helping hire developers, we’re delivering entire products and complex systems. We now serve clients in 180+ countries, offering broad timezone overlap, flexible staffing models, and a diversity of technical skills and cultural backgrounds.

Our growth trajectory ensures that high-performers don’t just onboard — they accelerate. With access to enterprise-level clients, cross-functional teams, and varied domains (FinTech, Blockchain, Healthcare, AI), talent can grow in ways rarely possible in traditional setups.

Our Vision & Mission: Where We’re Going Next

We are growing fast and have the vision of building the leading software development company in the world.
We believe that remote-first, globally distributed engineering teams are the future.


Our goals include:

1. Expand into a full end-to-end software delivery partner — delivering complete engineering solutions, from CTO-level leadership to full product development.
2. Attract and serve enterprise-level clients — by strengthening delivery quality, project reliability, and compliance to handle complex, high-stakes projects.
3. Deliver speed, quality, and flexibility at scale — ensuring clients get vetted, ready-to-interview talent and high-performing teams with exceptional turnaround time.
4. Sustain rapid, high-quality growth — continuing our momentum as one of Europe’s fastest-growing tech companies while preserving performance, culture, and delivery excellence.


Giving back is part of our DNA. We donate around 10% of the revenue to support vulnerable groups — including children, women, refugees — and invests in education programs for young students and future IT professionals.

If you’re motivated by scale, impact, complex projects, and global collaboration, Index.dev is the kind of place where your efforts will be amplified.
Here are some reviews from our teammates on -> Glassdoor.   


You would make an ideal candidate for our company if you are willing to commit to the following:
Above Average Principles:
Integrity.
Respect. Show empathy and respect to others and their feelings; Show others that you care.
Extra-Mile. Excellence and work ethics. Ask the question: “What else can I do?”; Reject average, good to pass by.
Move Quickly and Be Resourcefulness. Do more with less.
Ongoing Learner. Ask the questions: “What coaching do you have for me?” and “What can I do better?“; What is the learning here?.
Team Player. Talent wins games, but teamwork and intelligence win championships.
Extra Smile. We look to the positive side in every situation. We love what we do every day. Ask the question: “What is good in this?”.