
Teya · Brazil | Rio de Janeiro
Hello. We’re Teya. Teya was founded on a simple belief: local businesses deserve better. They are the cafés, restaurants, salons, shops and entrepreneurs that...
Hello. We’re Teya.
Teya was founded on a simple belief: local businesses deserve better.
They are the cafés, restaurants, salons, shops and entrepreneurs that bring character to our high streets, create jobs and keep
communities moving. Yet for too long, financial services has made life harder for them - with clunky tools, poor support and
complexity that gets in the way of running a business.
Teya exists to change that.
We’re building a financial platform for local businesses across Europe - one built around simple tools, thoughtful design and real
human support. Our Members rely on us to help them run their business with confidence, and that responsibility shapes the way we
work.
We move fast. We care about quality. We stay close to the detail. And we believe great performance and genuine hospitality should
go hand in hand.
If you want to build meaningful products, solve real problems and make a genuine difference for local businesses, we’d love to
hear from you
Your Mission
As an AI Engineer, you will help build and scale AI-powered products that directly improve how our customers interact with our
platform and how our teams operate.
You’ll join our AI Research & Development team focused on creating intelligent systems where AI is core to the experience —
including customer onboarding and due diligence, risk and fraud monitoring, pricing and customer lifetime value optimisation,
customer support automation, and AI-assisted software development.
You’ll work across machine learning, generative AI, data, and software engineering to design, build, and productionise AI
solutions that are reliable, scalable, measurable, and impactful. This role requires a strong engineering mindset, the ability to
translate business problems into AI solutions, and the curiosity to explore how emerging AI capabilities can create real value.
retrieval-augmented generation (RAG), agents, and automation workflows.
improve outcomes.
practices.
loops.
PyTorch, or similar.
prevention.
Teya is proud to be an equal opportunity employer.
We are committed to creating an inclusive environment where everyone regardless of race, ethnicity, gender identity or expression,
sexual orientation, age, disability, religion, or background can thrive and do their best work. We believe that a diverse team
leads to better ideas, stronger outcomes, and a more supportive workplace for all.
If you require any reasonable adjustments at any stage of the recruitment process whether for interviews, assessments, or other
parts of the application—we encourage you to let us know. We are committed to ensuring that every candidate has a fair and
accessible experience with us.
Hello. We’re Teya. Teya was founded on a simple belief: local businesses deserve better. They are the cafés, restaurants, salons, shops and entrepreneurs that bring character to our high streets, create jobs and keep communities moving. Yet for too long, financial services has made life harder for them - with clunky tools, poor support and complexity that gets in the way of running a business. Teya exists to change that. We’re building a financial platform for local businesses across Europe - one built around simple tools, thoughtful design and real human support. Our Members rely on us to help them run their business with confidence, and that responsibility shapes the way we work. We move fast. We care about quality. We stay close to the detail. And we believe great performance and genuine hospitality should go hand in hand. If you want to build meaningful products, solve real problems and make a genuine difference for local businesses, we’d love to hear from you Your Mission As a Senior Machine Learning Engineer you will build the models and decision systems that turn Teya's data into better outcomes for our customers and our business. You will work on problems where quantitative rigor changes the result: who we onboard, how we detect and prevent fraud, how we price, and how we understand and grow customer value. You'll join our AI Research & Development team, partnering with engineers, product managers, and domain experts to take problems from framing through model development and into reliable, monitored production systems. This role suits someone who combines strong statistical and machine learning foundations with the engineering discipline to ship, and who is motivated by measurable business impact rather than modeling for its own sake. As a Senior Machine Learning Engineer at Teya, you will be expected to: * Frame ambiguous business problems as well-posed modeling, inference, or optimization tasks, and choose methods that fit the data and the decision. * Design, build, validate, and deploy predictive and decisioning models across areas such as fraud and risk monitoring, customer onboarding and due diligence, pricing, and customer lifetime value. * Run rigorous experiments and causal analyses, including A/B testing, uplift modeling, and offline evaluation, to measure whether models actually move the outcomes that matter. * Engineer features and build the data pipelines that feed training and serving, with attention to leakage, reproducibility, and data quality. * Productionise models with strong attention to validation, backtesting, monitoring, drift detection, and retraining, so performance holds up after launch. * Work closely with product managers, engineers, and domain experts to identify where modeling creates value and to integrate models into products and operational workflows. * Apply optimization and operations research methods where decisions, not just predictions, are the goal. * Contribute to modeling standards, evaluation practices, and reusable tooling across the team. * Stay current with developments in machine learning and statistics, and apply new methods where they earn their place. Requirements * Strong foundations in statistics and machine learning, with the judgment to match methods to problems. * Proficiency in Python and its data and ML ecosystem (for example pandas, scikit-learn, NumPy), and strong SQL. * Hands-on experience building and deploying machine learning models in production, not only in notebooks. * Solid command of supervised and unsupervised learning, including methods such as gradient boosting, regularised regression, and clustering, with a clear understanding of model evaluation and overfitting. * Experience with experimentation and inference, including A/B testing and the basics of causal estimation. * Experience with cloud platforms and modern engineering practices (CI/CD, APIs, monitoring, infrastructure as code). * Strong software engineering fundamentals including testing, reproducibility, and maintainability. * Ability to communicate quantitative findings and their business implications clearly to both technical and non-technical audiences. Nice to have * Experience building models in regulated industries such as payments, fintech, banking, risk, compliance, or fraud prevention. * Experience with use cases such as: * Fraud detection and anomaly detection * Credit and onboarding risk decisioning * Pricing and customer lifetime value modeling * Churn and propensity modeling * Forecasting and time series * Recommendation and personalisation * Background in operations research, mathematical programming, or stochastic optimization. * Knowledge of MLOps, model lifecycle management, feature stores, monitoring, and governance. * Experience with deep learning frameworks such as PyTorch or TensorFlow where the problem warrants them. * Familiarity with data engineering concepts, analytics platforms, and experimentation frameworks. * Contributions to the ML or statistics community through open source, research, or technical writing. Teya is proud to be an equal opportunity employer. We are committed to creating an inclusive environment where everyone regardless of race, ethnicity, gender identity or expression, sexual orientation, age, disability, religion, or background can thrive and do their best work. We believe that a diverse team leads to better ideas, stronger outcomes, and a more supportive workplace for all. If you require any reasonable adjustments at any stage of the recruitment process whether for interviews, assessments, or other parts of the application—we encourage you to let us know. We are committed to ensuring that every candidate has a fair and accessible experience with us.
We’re a new team building AI-assisted tools to make Datadog developers more effective, by autonomously generating tests, fixing bugs, and improving performance. We’re looking for a product-minded generalist to help us quickly define and ship products that make all Datadog customers 10x developers. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. WHAT YOU’LL DO: * Work closely with our users, designers, PMs, and data scientists on cutting edge and delightful LLM-based agents. * Work on prompts, evals, and agent tools for working with code, and on the engineering to productionize these systems and integrate them with Datadog products. * Prototype and see what works well in the real world, iterate closely with our users, and then ship. * Follow the latest research on LLM prompting, agents, and code editing. * Work with other Datadog teams to expand capabilities, for example integrating with the Datadog IDE extensions to deliver a CoPilot-like assistant, or Dynamic Instrumentation to collect more runtime data from production and pre-production environments. WHO YOU ARE: * You’re a backend engineer with at least 5 years of professional experience (Go, Java, Python) who values code simplicity and performance. You’ve shipped software that uses LLMs to production. * You are passionate about Generative AI and its ability to help software engineers be more productive. * You have relevant experience with Large Language Models, large-scale systems and data sets, machine learning, or adjacent fields. * You are a great community ambassador and can drive hard technical conversations towards a pragmatic solution. * You want to work in a fast, high-growth startup environment that respects its engineers and customers. * You have experience writing developer tools (such as IDEs, static code analysis tools, or compilers). * You have demonstrated ability to use AI coding tools in day-to-day workflows and validate, critique, and refine AI-generated output. * Bonus: you’re motivated to push the boundaries of how AI can improve software engineering best practices and contribute to building AI-enabled products. Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply. Benefits and Growth: * New hire stock equity (RSUs) and employee stock purchase plan (ESPP) * Continuous professional development, product training, and career pathing * Intradepartmental mentor and buddy program for in-house networking * An inclusive company culture, ability to join our Community Guilds (Datadog employee resource groups) * Access to Inclusion Talks, our Internal panel discussions * Free, global mental health benefits for employees and dependents age 6+ * Competitive global benefits Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog. #LI-Hybrid ---------------------------------------------------------------------------------------------------------------------------------- About Datadog: Datadog is the leading observability and security platform for the AI era, providing businesses with unified visibility across the technology stack to manage complexity at scale. It brings applications, infrastructure, data, models, and security into one place, using AI to detect and resolve issues before they impact customers. Trusted globally by Fortune 500 companies and high-growth AI leaders, Datadog enables businesses to move faster with clarity and confidence. Learn more about #DatadogLife on Instagram, LinkedIn, and Datadog Learning Center. ---------------------------------------------------------------------------------------------------------------------------------- Equal Opportunity at Datadog: Datadog is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and other characteristics protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. Here are our Candidate Legal Notices for your reference. Datadog endeavors to make our Careers Page accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please complete this form. This form is for accommodation requests only and cannot be used to inquire about the status of applications. Privacy and AI Guidelines: Any information you submit to Datadog as part of your application will be processed in accordance with Datadog’s Applicant and Candidate Privacy Notice. For information on our AI policy, please visit Interviewing at Datadog AI Guidelines.
About 9fin 9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion. Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets. Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption. We’re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide. THE OPPORTUNITY The Data Science team is growing at 9fin! We are doing world-class work with groundbreaking technologies to build data-driven products using machine learning, computer vision, natural language processing, speech and audio, and knowledge/data mining. We are looking for a Senior AI Engineer to accelerate our application of AI across teams and products. Come and join us, you will get to build large-scale AI powered systems, learn and apply the latest techniques, and work alongside other great researchers and engineers! Every day is different, but here's an example of the kind of things you'll work on: * Design and build generative AI applications tailored to complex financial and legal workflows, leveraging state-of-the-art models to deliver innovative, practical solutions that streamline decision-making and unlock new efficiencies. * Drive end to end model development lifecycle, leading the team in best practices, ensuring reproducible research and well managed model delivery/deployment. * Collaborate cross functionally to share diverse ideas, understand business problems, and elevate/mentor your teammates. * Translate complex problems into well-defined scoped bets in an internal startup style environment, dynamic and fast-paced. * Learn and apply ground-breaking research and approaches in advanced topics, iterating improvements with a fail fast mentality. * Be a proactive sharer of compelling ideas/work to the rest of the team and organisation. We want you to help lead/push the adoption of AI throughout 9fin. ABOUT YOU This role will be a great fit if you: * Strong proficiency in Python for production ready delivery. * You’re an expert in any of the following areas - deep expertise in one and familiarity with others is ideal: * Information Retrieval: chunking strategies, (finetuning) embedding models, training re-rankers. * Entity/relationship extraction/resolution * Knowledge Graphs; building and inference, graphRAG * Recommendation systems and ranking: personalisation, learning-to-rank, feed ranking, user modelling, etc. * Tabular ML: feature engineering, structured data modelling (GBDTs, etc.) * Statistical & Predictive Modelling: supervised ML, anomaly detection, temporal modelling, etc. * Deep understanding of the GenAI landscape and agentic frameworks. * Experience working in the full model lifecycle (including experimentation, training, testing, monitoring, and deployment). We are data centric and love our evals! * You have a strong product focus with a desire to understand the end-to-end impact of your solutions for our end users. * Good knowledge of AWS’s AI infrastructure. BENEFITS We’re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel. Financial & Insurance * Competitive Salary (our salary bands are benchmarked at the top end of the market) * Equity * Pension (your minimum contributions are 4% with 9fin matching up to 7%) * Private Medical Insurance * Paid sick leave with Income Protection for long periods of illness * Group Life Assurance * Season Ticket Loan & Cycle to Work schemes Time off * 25 holiday days per year * Local public holidays (with the ability to exchange them for alternative days) * Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work * Work abroad for up to 3 months a year * 1 month paid sabbatical after 5 years of service * Enhanced parental leave & flexible working arrangements available Training & Culture * Professional learning and development budget * AI experimentation budget of £800 (UK) per employee to trial AI tools * Quarterly team socials * Summer and Winter company social events 9fin is an equal opportunities employer At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you’re excited about this role but your experience doesn’t perfectly align with the job description, we encourage you to apply anyway. You might just be who we’re looking for — either for this role, or perhaps another.