Upstaff

Summary

Seeking a skilled developer to build and maintain a premium hedge fund intelligence platform.

• You'll combine Python/PostgreSQL ETL pipelines, REST APIs, AI tools (LLMs for data summarization & querying), and custom WordPress features to deliver interactive investor letters, reports, grids, and subscriber content for institutional-grade insights at retail prices.
• Several hours US Timezone (EST) Overlap
• Full-time or Part-time (30-40 hours/week)

About Project

A specialized online platform that serves as an institutional investor intelligence service focused on hedge funds, value investing, and related alternative investments. It provides "institutional-level" data and insights at more accessible (retail-friendly) prices.

Key Features and Content

• Investor Letters:
• Conferences & Events: Reports and notes from hedge fund conferences 
• Hidden Value Stocks: Quarterly newsletter/issues analyzing stock picks from top managers.
• News & Profiles: Articles on hedge fund strategies, emerging managers, activist investing, 13F filings, short-selling, and interviews
• Subscription Model: Paid membership for premium/ad-free access, exclusive insights, older archives, and deeper studies; free tier for some content.

Your Role

Build & maintain a premium investment intelligence platform (hedge fund data, letters, reports) using WordPress frontend + AI/data backend.

You will be the key technical builder and maintainer of the investment intelligence platform, combining backend data pipelines with a WordPress frontend. This hybrid role covers some data engineering, AI integration, and web development to deliver institutional-grade hedge fund/value investing insights to a growing subscriber audience. 

Responsibilities

• Audit and optimize WordPress and infrastructure for performance, security, and caching; handle subscriber access. 
• Build ETL pipelines for large financial data import/transformation (PostgreSQL, Python/Pandas/Airflow)
• Create REST APIs to serve data for dynamic tables, grids, and reports
• Develop WordPress custom plugins/themes/blocks for interactive data displays & subscriber features.
• Automate data workflows & iterate on user-facing features

Requirements

• 3+ years dev experience (full-stack or backend-heavy)
• Solid WordPress (custom plugins, REST API, optimization)
• Strong Python (ETL, APIs: FastAPI) + SQL (PostgreSQL)
• AWS Cloud Infrastructure, Serverless, Lambda. 
• JavaScript + frontend libs for tables/grids (DataTables/Chart.js)
• Hands-on AI integration (LLMs, prompt engineering, summarization/NLP)
• B2/C1 English with several hours of overlap with North America (EST).  
• Bonus: Financial data experience, Docker/cloud, hedge fund knowledge

Summary

Backend Engineer, Node.js, Postgres. Remote role building core platform systems for an enterprise AI product. 5+ years of experience required.

About the company

Our client builds an AI platform that enables enterprises to customize and deploy AI capabilities for their specific needs. The platform team is central to this work, responsible for infrastructure, shared components, and internal tooling that the rest of engineering depends on.

The role

This is a hands-on implementation engineering position. You'll work on deploying, configuring, and integrating the platform for enterprise clients, translating their requirements into working solutions, deployed at clients' infrastructures. The role sits between product engineering and customer success: technically deep, but with awareness of real-world client needs.

You'll collaborate closely with platform engineers and business teams, occasionally joining business discussions to clarify technical requirements or explain implementation details.

What you'll work on

• Implementing and configuring platform deployments for enterprise customers
• Building integrations between the platform and client systems
• Working with internal teams to understand client requirements and translate them into technical solutions
• Contributing to implementation tooling, documentation, and repeatable deployment processes
• Troubleshooting and resolving issues during and after deployment
• Occasionally participating in client calls to gather requirements or provide technical guidance

What we're looking for

• Strong proficiency in Node.js and TypeScript
• Experience with React and frontend integration
• PostgreSQL/similar RDBMS and general data modeling knowledge
• Familiarity with cloud platforms (AWS, Azure, or GCP), multi-cloud exposure is valuable
• Clear communication skills, - comfortable explaining technical concepts to non-technical stakeholders
• Ability to work independently and manage multiple implementation workstreams
• 5+ years of software engineering experience

Useful additions / nice to haves

• Experience with AI platforms or AI/LLM integration
• Familiarity with CI/CD pipelines and infrastructure-as-code
• Vue.js experience
• Background in enterprise software implementation or professional services
• Previous work in similar roles

Summary

Senior Backend Engineer, Node.js, Postgres. Remote role building core platform systems for an enterprise AI product. 5+ years experience required.

About the company

Our client builds an AI platform that enables enterprises to customize and deploy AI capabilities for their specific needs. The platform team is central to this work, responsible for infrastructure, shared components, and internal tooling that the rest of engineering depends on. The team works closely with product and applied AI engineers, with short feedback loops and genuine technical ownership.

The role

This is a backend-focused engineering position working on core platform systems. You'll design and build the foundational services that AI-native products run on — dealing with architecture decisions, performance problems, data modeling, and system reliability.

The work is technically demanding. When something difficult or critical needs to be solved properly, this role is expected to lead that effort.

What you'll work on

• Designing and implementing backend services and system components end-to-end
• Building infrastructure that supports fast iteration without sacrificing reliability
• Investigating and resolving complex issues across performance, data, and APIs
• Collaborating with platform, AI, and product teams to deliver systems that are observable and maintainable
• Improving developer experience through better tooling, clearer standards, and thoughtful architecture

What we're looking for

• 5+ years of software engineering experience with JavaScript tech stack, with clear ownership of complex backend systems
• Strong Node.js proficiency- clean, well-structured backend code matters here
• Solid understanding of relational databases (PostgreSQL) and data modeling
• Good debugging instincts and sound engineering judgement
• Ability to learn new domains quickly and work independently

Useful additions

• Experience with distributed systems, caching layers, message queues, or multi-tenant architectures
• Background in AI/LLM integration on the backend
• Familiarity with AI development platforms or coding assistants
• Previous work on enterprise platforms or AI infrastructure
• Platform/infrastructure experience: observability, CI/CD, API design

Summary

• 5+ years in data science or data engineering roles;
• Proficient in Python, SQL, and common data tools (Pandas, Plotly, Streamlit, Dash);
• Familiarity with large language models (LLMs) and deploying ML in production;
• This role is NOT focused on BI, data platforms, or research work;
• Good fit: Hands-on, Python-first Applied AI / GenAI engineers with real delivery ownership and client-facing experience;
• No fit: Data platform or BI profiles, architecture-heavy or lead-only roles, research-focused profiles, or candidates with only PoC-level GenAI exposure and no ownership.

Role:

This role is ideal for someone comfortable working throughout the entire pre-sales to delivery lifecycle, rolling up their sleeves to solve complex multi-faceted problems, thrives as a technical communicator, and works well as a key member of a team. 

Requirements:

• 5+ years in data science or data engineering roles;
• Proficient in Python, SQL, and common data tools (pandas, Plotly, Streamlit, Dash); 
• Familiarity with large language models (LLMs) and deploying ML in production;
• Experience working with APIs and interpreting technical documentation;
• Client-facing mindset with clear ownership of decisions and outcomes;

Summary

• 5+ years of professional experience with Python;
• Strong experience with FastAPI, Flask, or similar Python web frameworks;
• Experience building and consuming RESTful APIs;
• Experience with relational and/or NoSQL databases;
• Experience with or understanding of: NumPy, SciPy, Pandas, scikit-learn;
• Experience or hands-on experimentation with LLMs (OpenAI, Claude, etc.), prompt engineering, AI-powered assistants, content summarization, and data analysis using AI.

About the role

We are looking for a Senior Python Developer to join a globally distributed team supporting high-volume digital initiatives for a large international automotive group, covering both passenger vehicles and commercial transport solutions (fleet, vans, etc.) across multiple markets (USA, Canada, Europe, and globally).

This role requires a strong backend-focused Python developer with broad technical exposure, including API development, data processing, and some frontend interaction. The ideal candidate is communicative, proactive, and comfortable collaborating directly with client stakeholders, while also being capable of working independently and leading initiatives when needed.

You will primarily support long-term enterprise automotive projects (99–100% allocation), working on scalable, production-grade systems that increasingly leverage Python, AI, and data-driven architectures.

Responsibilities:

• Design, develop, and maintain scalable Python-based backend services;
• Build and maintain APIs (primarily using FastAPI and/or Flask);
• Implement data processing pipelines and transformations;
• Support frontend applications by serving structured, well-optimized data;
• Work across frontend, backend, and data layers when needed;
• Collaborate closely with frontend developers building SPAs and feature apps;
• Integrate with Adobe Experience Manager (AEM)-based platforms;
• Participate in architecture discussions and technical decision-making;
• Improve and refactor existing codebases for maintainability and scalability;
• Contribute to AI-powered features and workflows;
• Implement testing strategies and ensure code quality;
• Identify performance bottlenecks and propose scalable solutions;
• Take ownership of features or systems end-to-end when required.

Required Skills & Experience

• 5+ years of professional experience with Python;
• Strong experience with FastAPI, Flask, or similar Python web frameworks;
• Experience building and consuming RESTful APIs;
• Solid understanding of backend architecture and service design;
• Experience with data processing, transformations, and structured outputs;
• Experience with relational and/or NoSQL databases;
• Familiarity with asynchronous programming and concurrency;
• Experience with Git-based workflows;
• Strong debugging and problem-solving skills;
• Ability to work independently and take ownership;
• Strong communication skills - able to explain technical decisions clearly.

Data & AI Exposure (Highly Desired)

The client is increasingly focused on AI-driven workflows and data-heavy systems. The ideal candidate should be comfortable discussing:

• Experience with or understanding of: NumPy, SciPy, Pandas, scikit-learn;
• Data transformation pipelines;
• Serving processed data to dashboards, charts, or frontend visualizations;
• Scraping, parsing, and processing large volumes of data;
• Queue-based systems and background processing;
• Handling concurrency, scaling, and performance challenges.

AI & LLM Experience (Big Plus)

The team is actively working on GenAI-powered solutions for a large international enterprise client. Even if not currently working with AI, candidates should ideally have:

Experience or hands-on experimentation with:

• LLMs (OpenAI, Claude, etc.);
• Prompt engineering;
• AI-powered assistants;
• Content summarization;
• Data analysis using AI;

Ability to discuss:

• Proofs of concept;
• Scaling AI features from PoC to production;
• Challenges around infrastructure, cost, reliability, and governance.

Team and Collaboration, 

• The team is globally distributed (US, Canada, Europe);
• The candidate will be based in Europe and will most likely have a Tech Lead in the UK as their main technical point of contact;
• Direct communication with the client is strongly encouraged;
• The candidate must be comfortable discussing ideas, raising concerns, suggesting improvements, and asking questions when needed;
• At the same time, the candidate must be able to work independently, as some projects may involve being the only developer on a given initiative.

Summary

ML Researcher / Engineer wanted to join a high-impact AI/ML team in performance marketing. The company runs campaigns across 25+ verticals, and you'll be researching, inventing, and implementing suitable ML models into campaign management, and porting successful pipelines and processes into a fully automated ML-driven system. Your models will influence real bidding, real budgets, and real campaign decisions.

What's the project about?

You'll be working with ML models for a performance-based (pay-per-lead) marketing platform that relies on prediction, scoring, and ranking. You’ll work with rich tabular data, build models that power optimization loops, and collaborate closely with business and Data Engineering teams to prepare your models for production, not just notebooks.

Required Skills:

• Experience building and validating tabular ML models
• XGBoost/LightGBM/CatBoost and similar models, corresponding Python libraries
• Defining metrics and design validation setups
• Confident feature engineering and data quality/wrangling
• Data pipelines

Would be a Plus:

• Experience with model serving (FastAPI, Bento, TorchServe)
• Monitoring: drift, data checks, stability
• Background in ranking/optimization models

What will you do?

• Build predictive, scoring, and ranking models directly impacting client campaigns and ROI
• Own dataset preparation, pipelines, processes, and validation strategies
• Design experiments that challenge assumptions and uncover real lift
• Collaborate with Software and Data Engineers on feature availability and consistency, packaging, and preparing models for real usage in production

Who you are?

You have strong, hands-on experience with tabular ML (XGBoost, LightGBM, CatBoost), you’ve trained and validated models, and you enjoy shaping experiments that prove whether a hypothesis lives or dies. You think clearly, value clean data, honest metrics, and production impact.

Summary

• We have a new urgent vacancy for an Expert JavaScript / React Engineer 

• Client is a Payment processing and provider platform 

• Location: Europe - Poland, Ukraine (we look at Kyiv, Zhytomyr, Vinnytsia, Khmelnytskyi, Chernivtsi, Ternopil, Rivne, Zakarpattia, Ivano-Frankivsk, Lviv, Volyn regions), Spain, UK, Bulgaria. 

• Duration: a 3-month project, but with good chances to turn into a permanent engagement 

• PE (FOP 3 group) is needed 

• Start: ASAP 

• English: Upper-Intermediate and higher.

• Ridect Hiring Model (No Subcontract)

About the client

A fast-growing, profitable, well-funded, and dynamic global payments company. Its offices are located in Israel, New York, and more. It is serving thousands of corporates and millions of end-users (payment receivers), in 190+ countries.

R&D organization holds almost 500 workers (Developers, Automation QA, DBA, IT, Professional services / production support). R&D teams are operating in SCRUM methodology, with product managers involved in each team.

Client systems are based on Microsoft and open-source technologies serving both international WEB users and the company's internal users.

R&D is looking to extend its capacity for new-developments and existing product enhancements, with high-quality and fast pace of delivery.

With client’s fast, flexible, secure, and low-cost solutions, businesses and professionals in both developed and emerging markets can now pay and get paid globally as easily as they do locally.

About the role

As an Expert React Engineer, become a part of a cross-functional development team, engineering experiences of tomorrow. The client ecosystem domain is responsible, among other things, for the integration of partnerships (3rd party solutions).

Responsibilities:

• Collaborate with designers and developers to build responsive and user-friendly interfaces.
• Implement and maintain UI components using React.
• Write clean, efficient, and testable code under the guidance of more experienced colleagues.
• Troubleshoot and debug issues in web applications.
• Contribute to improving the usability and performance of our products.
• Front-end development to meet customers’ business needs and implement components according to a modern software development environment with acceptable quality and supervision;
• Taking part in the decision-making process in design application architecture, solution development, architecture, and code review;
• Describing own code within technical documents and simple diagrams, and providing inputs/updates to specifications for the solution;
• Writing automated tests;
• Proactive position in solution development, process improvements;
• Working in an international distributed team in an Agile environment;
• Following best practices and defined standards for implementing the web application
• Investigate and fix application bugs

Requirements:

• Experience in Front End development for more than 5 years, including recent experience in React
• Translate business needs into technical solutions and make decisions when building software (business-oriented);
• Proficiency in JavaScript/TypeScript, including knowledge of asynchronous

programming.

• Experience with modern JavaScript frameworks/libraries
• Understanding of server-side technologies
• Familiarity with CSS preprocessors (like SASS or LESS.) or modern styling techniques (e.g., StyledComponents).
• Understanding of responsive design and frameworks like Bootstrap or Foundation.
• Proficiency in Git and workflows (e.g., GitFlow).
• Ability to handle asynchronous operations
• Knowledge of front-end testing frameworks such as Jest, Mocha, or Jasmine.
• Understanding of best practices for optimizing front-end performance.
• Familiarity with tools for monitoring and improving performance
• Experience working in an Agile environment.
• Excellent communication skills and a willingness to learn.

Can be a plus:

• Experience with financial apps
• API integration
• Stable coins

Personal skills:

• Investigate issues.
• Able to work in distributed cross-functional teams effectively.
• Plan, schedule, and monitor your own work.
• Have learning agility (readiness for challenge and being open to change).

About Project

• Upstaff.com — це платформа для підбору та залучення інженерів для продуктових компаній і стартапів.
  Ми працюємо на перетині IT, рекрутингу та технологій, створюючи інструменти й контент, які допомагають компаніям знаходити правильних інженерів, а спеціалістам — цікаві проєкти.

• Зараз ми шукаємо Content Creator, який допоможе будувати публічну експертизу Upstaff через відео, подкасти та контент про IT-продукти, сервіси й інструменти.

   

Your Role

• Ви будете відповідальні за створення відео- та текстового контенту англійською мовою:
  огляди продуктів, подкасти, інтерв’ю, освітні та промо-формати для YouTube, TikTok, LinkedIn та інших платформ.
• Це роль для людини, яка комфортно почувається в кадрі, і може самостійно вести контент від ідеї до публікації та має hands-on досвід створення контенту. 
• Розглядаємо як повну зайнятість, так і парт-тайм. 

• Досвід з IT бажаний але не є обов'язковим.

   

Responsibilities

• Створення відеооглядів 
  • Періодичні огляди розробників в наявності ("Гарячі"), зазвичай підбірка на якусь тематику (команда або схожі профілі).
  • IT-продуктів, що орієнтовані на рекрутерів (в тому числі власних)
  • Профілів інженерів (за їх учатсі або без)
  • Вакансій (за участі замовника, їх матеріалів, огляд, нюансність, вимоги, поради)
  • Порівняльні огляди схожих сервісів (upwork, toptal тощо) 
  • Успішні кейси заповлення позицій (одразу, або через проміжок часу, як підтвердження правильного вибору)
  • Кумедні кейси, тренди.
• Участь у записі та веденні подкастів (аудіо / відео)
• Написання сценаріїв для відео та подкастів
• Підготовка текстового контенту англійською мовою (огляди, статті, опис відео)
• Базовий відеомонтаж:
  • вставки
  • логотипи
  • текст
  • субтитри
• Публікація та просування контенту (YouTube, LinkedIn, Twitter/X, Reddit, Insta, TT)

• Аналіз ефективності контенту (перегляди, engagement, базова аналітика)

   

Requirements

• Досвід створення відеооглядів продуктів / сервісів / інструментів.
• Досвід ведення подкастів (аудіо або відео)
• Впевнена англійська мова — письмова та усна
• Комфортна робота в кадрі, вміння чітко й впевнено доносити думки
• Базові навички відеомонтажу
• Досвід написання контенту англійською (статті, огляди, сценарії)
• Самостійність у роботі та вміння планувати задачі без мікроменеджменту
• Базове розуміння IT-тематики (технології, інструменти, тренди)

Big "+"

• Власний блог або канал (з посиланням і кількістю підписників) або досвід ведення контенту для компанії
• Досвід роботи з інструментами монтажу:
  Adobe Premiere, Final Cut, CapCut, DaVinci Resolve
• Розуміння SEO для контенту та YouTube-алгоритмів
• Досвід просування контенту в соцмережах
• Досвід інтерв’ю з експертами в IT-сфері
• Робота з інструментами запису: OBS, Riverside, Zoom
• Навички графічного дизайну для thumbnails (Canva, Photoshop)

Про проєкт

• Upstaff.com — це платформа для підбору та залучення інженерів для продуктових компаній і стартапів.
  Ми працюємо на перетині IT, рекрутингу та технологій, створюючи інструменти й контент, які допомагають компаніям знаходити правильних інженерів, а спеціалістам — цікаві проєкти.

• Зараз ми шукаємо Content Creator, який допоможе будувати публічну експертизу Upstaff через відео, подкасти та контент про IT-продукти, сервіси й інструменти.

   

Ваша роль

• Ви будете відповідальні за створення відео- та текстового контенту англійською мовою:
  огляди продуктів, подкасти, інтерв’ю, освітні та промо-формати для YouTube, LinkedIn та інших платформ.

• Це роль для людини, яка комфортно почувається в кадрі, розуміє IT-контекст і може самостійно вести контент від ідеї до публікації.

   

Обовʼязки

• Створення відеооглядів 
  • Профілів інженерів (за усчатсі або без)
  • Вакансій (за участі замовника, їх матеріалів, огляд, нюансність, вимоги, поради)
  • Періодичні огляди розробників в наявності (HOT), зазвичай підбірка на якусь тематику (команда або схожі профілі).
  • IT-продуктів, що орієнтовані на рекрутерів (в тому числі власних)
  • Порівняльні огляди схожих сервісів (upwork, toptal тощо) 
  • Успішні кейси заповлення позицій (одразу, або через проміжок часу, як підтвердження правильного вибору)
  • Кумедні кейси, тренди.
• Участь у записі та веденні подкастів (аудіо / відео)
• Написання сценаріїв для відео та подкастів
• Підготовка текстового контенту англійською мовою (огляди, статті, опис відео)
• Базовий відеомонтаж:
  • вставки
  • логотипи
  • текст
  • субтитри
• Публікація та просування контенту (YouTube, LinkedIn, Twitter/X, Reddit, Insta, TT)

• Аналіз ефективності контенту (перегляди, engagement, базова аналітика)

   

Вимоги (обовʼязкові)

• Досвід створення відеооглядів продуктів / сервісів / інструментів в IT
• Досвід ведення подкастів (аудіо або відео)
• Впевнена англійська мова — письмова та усна
• Комфортна робота в кадрі, вміння чітко й впевнено доносити думки
• Базові навички відеомонтажу
• Досвід написання контенту англійською (статті, огляди, сценарії)
• Самостійність у роботі та вміння планувати задачі без мікроменеджменту
• Базове розуміння IT-тематики (технології, інструменти, тренди)

Буде великим плюсом (+)

• Власний блог або канал (з посиланням і кількістю підписників)
  або досвід ведення контенту для компанії
• Досвід роботи з інструментами монтажу:
  Adobe Premiere, Final Cut, CapCut, DaVinci Resolve
• Розуміння SEO для контенту та YouTube-алгоритмів
• Досвід просування контенту в соцмережах
• Досвід інтерв’ю з експертами в IT-сфері
• Робота з інструментами запису: OBS, Riverside, Zoom
• Навички графічного дизайну для thumbnails (Canva, Photoshop)