Jobs Python

We are looking for a Middle Python Developer with a strong focus on backend development, high-performance APIs, and microservices to join the Dataforest team. If you are looking for a friendly team, a healthy working environment, and a flexible schedule ‒ you have found the right place to send your CV.

You'll be a great fit if you have:

• 3+ years of commercial experience with Python;
• Strong production experience with FastAPI (async programming, dependency injection, Pydantic);
• Deep understanding and hands-on experience with GraphQL (schema design, resolvers optimization, federation is a plus) along with traditional REST API approach;
• Strong understanding of asynchronous programming (asyncio, multithreading/multiprocessing);
• Experience with AWS services;
• Experience with SQL databases, ORMs (e.g., SQLAlchemy/Tortoise), and query optimization;
• Solid understanding of client-server models, microservices architecture, and authorization/authentication principles (OAuth2, JWT).
   

Would be a plus:

• Experience with Strawberry or Ariadne (Python GraphQL libraries);
• Experience with Redis and Lua scripts;
• Experience with Celery or other async task managers/message brokers;
• Experience with third party integrations (payments, iGaming platforms, CRM and similar).
   

What you'll do:

• Designing and developing high-performance Backend APIs using FastAPI and GraphQL;
• Building and maintaining applications with a distributed microservices architecture;
• Writing efficient asynchronous logic and integrating third-party services;
• Developing data-retrieval applications and specialized scripts (similar to DAGs in Airflow or AWS Lambdas) to process information for further DS and DE workflows;

• Optimizing database queries and API performance to ensure low latency.

  
  We ensure your growth with:

• Competitive salary fixed in USD
• Flexible working schedule and fully remote work format
• Paid vacation days and sick leave days 
• Personal and professional development opportunities
• Participation in building innovative projects from scratch using modern technologies
• Team-building activities and corporate events
• English classes and educational events.

About the Role

At Coreblocks, we're looking for a Python Backend Engineer to help build the next generation of financial infrastructure. You'll work on scalable backend services, distributed systems, and AI-powered capabilities that support our platform. This role combines backend engineering, data processing, API development, and modern AI integrations, with a strong focus on performance, reliability, and scalability.

Key Responsibilities

Backend Engineering

• Design, develop, and maintain scalable backend services using Python (FastAPI, Django, or Flask).
• Build clean, maintainable, and well-tested code following modern software engineering practices.
• Improve the performance, reliability, and scalability of existing services.

Data Processing & System Integrations

• Develop and optimize data ingestion, ETL, and real-time processing pipelines.
• Integrate backend services with financial infrastructure, blockchain components, and third-party platforms.
• Ensure efficient and reliable data movement across distributed systems.

AI & Intelligent Services

• Collaborate with AI and Data teams to integrate LLM-powered capabilities and machine learning features into backend services.
• Implement semantic search, intelligent categorization, and AI-driven automation.
• Contribute to RAG-based and AI-enhanced product functionality where applicable.

API & Microservices

• Design and maintain secure, well-documented RESTful and gRPC APIs.
• Build reliable communication between internal microservices and external partners.
• Ensure API stability, performance, and security across the platform.

Database & Performance Optimization

• Optimize PostgreSQL queries, database schemas, and indexing strategies.
• Work with Redis to improve caching, throughput, and overall application performance.
• Design backend services capable of handling concurrent workloads efficiently.

Engineering Excellence

• Participate in code reviews and architectural discussions.
• Write unit and integration tests to ensure software quality.
• Contribute to engineering standards, documentation, and continuous technical improvements.

Requirements

Technical Background

• 3+ years of commercial experience developing backend applications with Python.
• Strong hands-on experience with FastAPI and asynchronous programming using asyncio.
• Experience designing and maintaining production-grade backend services.

Databases

• Strong knowledge of PostgreSQL and SQL optimization techniques.
• Experience working with NoSQL databases and Redis.
• Practical experience with vector databases such as Pinecone, Milvus, Weaviate, or similar for AI-powered search and retrieval systems.

Cloud & DevOps

• Experience with Docker and CI/CD pipelines (GitHub Actions or GitLab CI).
• Experience working with AWS or Google Cloud Platform.

Financial & Technical Domain

• Understanding of financial systems, transaction processing, payment flows, or blockchain-based architectures.
• Familiarity with distributed systems and scalable backend design.

Collaboration

• Strong analytical and problem-solving skills.
• Comfortable working in a remote, cross-functional engineering team.
• Professional English (B2+) or higher.

Nice to Have

• Experience with Node.js or TypeScript.
• Hands-on experience with AI development tools such as Cursor, Claude, GitHub Copilot, or similar.
• Familiarity with Kafka, RabbitMQ, Airflow, Prefect, or other messaging and orchestration technologies.
• Experience building or supporting AI-enabled backend services, RAG architectures, or LLM integrations.

We're looking for an Interview Engineer to help shape fair, high-signal technical hiring for software engineers worldwide.

Join a global network of engineers and make an impact beyond writing code.

If you're an experienced software engineer who enjoys evaluating technical talent and cares about fair hiring, this role offers a genuinely different way to apply your expertise — well-compensated, and with up to 100 interviews per month, you'll directly influence the hiring outcomes of hundreds of engineers worldwide.

This is also an opportunity to challenge yourself in a new dimension — sharpening your communication, evaluation, and technical breadth while gaining exposure to a wide range of engineering backgrounds, problem-solving approaches, and technologies that pure coding roles rarely offer.

This role starts as a full-time engagement for the first 3 months, with the possibility to transition to a part-time format afterwards — making it a great fit for engineers looking for flexibility down the line.

Our client runs a leading technical interviewing platform used by companies ranging from fast-growing startups to large enterprises. Their model pairs experienced engineers with standardized interview frameworks to help organizations hire more accurately and fairly — at scale, across the globe. As an Interview Engineer, you'll play a key role in that mission, helping companies identify exceptional talent while creating meaningful career opportunities for developers around the world.

What you'll do in this role  

• Interview — Facilitate live technical interviews through the platform with software engineering candidates worldwide. Build a professional, inclusive experience while assessing fundamental coding skills, problem-solving ability, and technical knowledge.
• Evaluate — Deliver structured, objective feedback on each candidate's coding style, technical approach, communication, and knowledge-question responses — using established criteria that mitigate bias and improve hiring signal.
• Partner — Collaborate with the client's internal teams to test and refine interview content, processes, and platform features, contributing your frontline perspective to continuous improvement.

We're looking for

• 5+ years of professional experience as a Software Developer or Engineer, with strong Python proficiency and at least a working understanding of frontend technologies (e.g. JavaScript, React, or similar).
• Solid grasp of algorithms, data structures, and software engineering fundamentals.
• Excellent English communication skills — written and spoken — with the professionalism to put candidates from any background at ease.
• Ability to deliver objective, structured assessments under a consistent evaluation framework.
• Reliable webcam, microphone, and stable internet connection.

How to knock our socks off

• Previous experience conducting technical interviews (data structures, algorithms, system design)
• Experience mentoring, coaching, or guiding other engineers technically.
• Interest in talent assessment, interviewing methodologies, or inclusive hiring practices.
• Naming five or more dishes that include beetroot besides borshch.

✔ Not checking every box?

This job looks very exciting, but you hesitate to apply because of the confidence gap? Reach out to us anyway! Beetroot is an inclusive workplace that considers all applicants. We’re committed to openness — promoting equality and fostering an environment where different backgrounds, ideas, and experiences are not just accepted, but embraced. So let’s discover together whether we could be an excellent fit for each other.

Please send us your CV in English, and we'll be happy to discuss your application further.

Job Description

• Good Python knowledge
• Technical background, analytical mind with solid investigation skills
• Good knowledge of SQL fundamentals
• OOP knowledge
• REST APIs knowledge and experience is nice to have
• At least intermediate English level
• Responsible and dedicated, motivated, team player
• Good communication skills
• Ability to learn new technologies quickly

Job Responsibilities

• Development of new features and maintenance to existing and new services
• Developing server-side APIs and integrating them with front-end apps
• Performing writing clean, efficient, and well-documented code
• Product analysis and improvement
• Participating in code reviews and ensuring coding standards are followed
• Contributing to team processes
• Communication with clients and team members

Department/Project Description

Our customer owns and operates several of the most popular and award-winning brands in cable television in USA producing and delivering distinctive, compelling and culturally relevant content that engages audiences across multiple platforms.

The main essence of the project is to load and manage revenue statements from various digital streaming and EST providers.

About Digis

We are a European IT company with 200+ specialists delivering SaaS platforms, enterprise solutions, and cloud-native products for clients worldwide. We focus on building strong, long-term teams and supporting continuous professional growth.

About the Project

A fast-growing SaaS company developing a Unified API platform that helps software vendors connect their products with financial and business tools.

The platform enables seamless data synchronization across accounting, finance, and other SaaS systems, helping businesses reduce data silos and expand their integration capabilities. You will contribute to the product’s development, architecture, and future technical direction.

Responsibilities

• Scale and optimize the case detection scanner to improve its performance and reliability.
• Decompose the existing API into multiple independent and scalable services.
• Set up a local development environment for emulating Google Pub/Sub and Cloud Run.
• Design and develop an integration connector for Sage.

Requirements

• 5+ years of professional experience with Python.
• 2+ years of hands-on experience with FastAPI or Flask.
• 1+ year of experience with SQL.
• Upper-Intermediate English or higher.

Why This Project Is Exciting

• Autonomy: A results-oriented environment built on trust.
• Product Impact: An opportunity to contribute to the product and its technical direction.
• Stable and Growing Product: Work on an established SaaS platform with international clients.
• Professional Growth: Gain experience with financial integrations and scalable API solutions.

We Offer

• 20 paid vacation days per year.
• 5 paid sick days per year with no medical documentation required.
• A personalized development plan supported by individual professional growth goals.
• Compensation for professional and subject-matter training.
• Necessary work equipment and workplace setup support, if needed.
• Assistance with selecting English courses and compensation for course fees.
• A horizontal organizational structure with open and transparent communication.
• Opportunities to switch between projects and technologies within the company.
• Accounting support.

• • Free access to corporate psychologist services.

Join a project where scalable backend engineering meets modern AI-driven financial technology. We are looking for a Senior / Principal Python Engineer to help build and evolve high-load payment and revenue systems used by businesses worldwide.

You will work on cloud-native backend services, distributed systems, and payment infrastructure while collaborating with Product, Frontend, AI, and Engineering teams. This role is ideal for engineers who enjoy solving complex technical challenges, influencing architecture decisions, and driving engineering excellence.

We at Sigma Software value technical ownership, collaboration, and continuous learning. You will join an international environment where innovation, modern technologies, and professional growth are part of everyday work.

Customer

Our Customer is a global SaaS company developing an AI-native revenue platform for modern finance and accounting teams. The company provides subscription management, billing automation, and revenue operations solutions that help organizations optimize financial workflows, improve scalability, and streamline transaction management across complex business ecosystems.

Requirements

• 5+ years of professional Back-end software engineering experience using Python
• Solid experience designing and building RESTful APIs and distributed backend systems
• Strong knowledge of SQL and/or NoSQL databases
• Hands-on experience with AWS cloud services
• Experience with Docker and Kubernetes
• Understanding of scalable cloud-native architectures and microservices principles
• Experience working in cross-functional Agile teams
• Strong problem-solving, communication, and collaboration skills
• Ability to drive technical initiatives and contribute to architectural decisions
• Upper-Intermediate or higher English level

WILL BE A PLUS:

• Experience with FastAPI and TypeScript
• Experience building AI-powered user experiences or integrating AI/LLM services into Front-end applications
• Hands-on experience with AI technologies and LLM ecosystems
• Experience integrating OpenAI, Anthropic, or similar AI services
• Experience working with AI SDKs and prompt-based applications

Responsibilities

• Design, develop, and maintain scalable backend services and APIs for cloud-native applications
• Build and optimize distributed systems, payment processing pipelines, and backend infrastructure
• Ensure high availability, security, scalability, and performance of backend systems
• Participate in architecture discussions and contribute to technical strategy and decision-making
• Collaborate with Product, Frontend, AI, and DevOps teams to deliver high-quality solutions
• Mentor engineers through code reviews, technical guidance, and engineering best practices
• Troubleshoot complex production issues and drive continuous improvements
• Contribute to AI-powered product capabilities and AI/ML-driven initiatives
• Promote engineering excellence, observability, and maintainability across services and infrastructure

Приєднуйся до проєкту, де масштабна Back-end розробка поєднується із сучасними AI-рішеннями у сфері фінансових технологій. Ми шукаємо Senior / Principal Python Engineer, який допоможе розвивати високонавантажені платіжні та revenue-системи, якими користуються компанії по всьому світу.

Ти працюватимеш із cloud-native сервісами, розподіленими системами та платіжною інфраструктурою, тісно співпрацюючи з Product, Front-end, AI та Engineering командами. Ця роль ідеально підійде інженерам, яким подобається вирішувати складні технічні задачі, впливати на архітектурні рішення та вдосконалювати технологічні підходи.

У Sigma Software ми цінуємо відповідальність за технічні рішення, командну взаємодію та безперервний професійний розвиток. На тебе чекає міжнародне середовище, де інновації, сучасні технології та можливості для навчання й професійного зростання є невід'ємною частиною щоденної роботи.

Customer

Наш клієнт — глобальна SaaS-компанія, яка розробляє AI-native платформу для управління доходами (Revenue Platform) для сучасних фінансових і бухгалтерських команд. Її рішення охоплюють управління підписками, автоматизацію білінгу та оптимізацію фінансових операцій (Revenue Operations), допомагаючи компаніям ефективніше керувати фінансовими процесами, масштабувати бізнес і спрощувати обробку транзакцій у складних корпоративних екосистемах.

Requirements

• Від 5 років комерційного досвіду в Back-end розробці з використанням Python
• Практичний досвід проєктування та розробки RESTful API і розподілених Back-end систем
• Глибокі знання SQL та/або NoSQL баз даних
• Практичний досвід роботи з хмарними сервісами AWS
• Досвід використання Docker і Kubernetes
• Розуміння принципів побудови масштабованих cloud-native та мікросервісних архітектур
• Досвід роботи в кросфункціональних Agile-командах
• Розвинені навички вирішення технічних проблем, ефективної комунікації та командної взаємодії
• Здатність брати технічне лідерство та впливати на архітектурні рішення
• Англійська мова — Upper-Intermediate або вище

WILL BE A PLUS

• Досвід роботи з FastAPI та TypeScript
• Досвід створення AI-функціональності для користувацьких застосунків або інтеграції AI/LLM-сервісів
• Практичний досвід роботи з сучасними AI-технологіями та LLM-екосистемами
• Досвід інтеграції OpenAI, Anthropic або аналогічних AI-сервісів

• Досвід роботи з AI SDK та застосунками, що використовують prompt engineering

   

Responsibilities

• Проєктувати, розробляти та підтримувати масштабовані Back-end сервіси й API для cloud-native застосунків
• Розробляти та оптимізувати розподілені системи, платіжні конвеєри (payment pipelines) і Back-end інфраструктуру
• Забезпечувати високу доступність, безпеку, продуктивність і масштабованість сервісів
• Брати участь у формуванні архітектурних рішень і технічної стратегії продукту
• Тісно співпрацювати з Product, Front-end, AI та DevOps командами для створення якісних і надійних рішень
• Проводити code review, менторити інших інженерів і ділитися найкращими інженерними практиками
• Аналізувати й вирішувати складні інциденти в production-середовищі, а також ініціювати технічні вдосконалення
• Долучатися до розвитку AI-функціональності продукту та AI/ML-ініціатив
• Розвивати інженерну культуру, покращувати спостережуваність (observability), надійність і простоту підтримки сервісів та інфраструктури

Join a team developing an enterprise-grade agentic AI platform that leverages AI agents, tools, skills, and orchestration capabilities to automate cybersecurity and business processes. The project involves building and enhancing modern GenAI solutions using technologies such as Python, Azure, RAG, MCP integrations, CI/CD, observability, and scalable cloud-native architectures. You will work on designing, developing, and industrializing advanced agent-based AI applications, contributing to new use cases, integrations, security features, and platform evolution.

• Responsibilities:

  * Design, develop, and maintain full-stack applications using Python, FastAPI, and React.
  * Build and enhance Agentic AI solutions leveraging LLMs, LangChain, LangGraph, and AI orchestration frameworks.
  * Develop backend services, APIs, and integrations with external systems and AI tools.
  * Design and optimize data models and queries in PostgreSQL.
  * Implement caching, session management, and performance optimization using Redis.
  * Collaborate with architects, DevOps engineers, and product stakeholders to deliver scalable solutions.
  * Ensure code quality through testing, code reviews, and adherence to engineering best practices.
  * Contribute to system observability, monitoring, troubleshooting, and platform reliability.
  * Participate in solution design and technical leadership.
  * Support CI/CD processes and cloud-native application deployment.

• Mandatory Skills Description:

  * 7+ years of professional software development experience.
  * Strong expertise in Python and modern backend development.
  * Experience with FastAPI and RESTful API design.
  * Strong frontend development experience with React.js.
  * Hands-on experience building Agentic AI applications.
  * Practical experience with LLMs (OpenAI, Azure OpenAI, Anthropic, or similar), LangChain, LangGraph, Langfuse.
  * Strong knowledge of PostgreSQL.
  * Experience with Redis.
  * Understanding of software architecture, design patterns, and scalable distributed systems.
  * Experience with Git, CI/CD pipelines, and modern development practices.
  * Good communication skills and ability to work in an international environment.
  * English: B2 or higher.

• Join a team developing an enterprise-grade agentic AI platform that leverages AI agents, tools, skills, and orchestration capabilities to automate cybersecurity and business processes. The project involves building and enhancing modern GenAI solutions using technologies such as Python, Azure, RAG, MCP integrations, CI/CD, observability, and scalable cloud-native architectures. You will work on designing, developing, and industrializing advanced agent-based AI applications, contributing to new use cases, integrations, security features, and platform evolution.
   

• Responsibilities:

  * Design, develop, and maintain full-stack applications using Python, FastAPI, and React.
  * Build and enhance Agentic AI solutions leveraging LLMs, LangChain, LangGraph, and AI orchestration frameworks.
  * Develop backend services, APIs, and integrations with external systems and AI tools.
  * Design and optimize data models and queries in PostgreSQL.
  * Implement caching, session management, and performance optimization using Redis.
  * Collaborate with architects, DevOps engineers, and product stakeholders to deliver scalable solutions.
  * Ensure code quality through testing, code reviews, and adherence to engineering best practices.
  * Contribute to system observability, monitoring, troubleshooting, and platform reliability.
  * Participate in solution design and technical leadership.
  * Support CI/CD processes and cloud-native application deployment.
   

• Mandatory Skills Description:

  * 7+ years of professional software development experience.
  * Strong expertise in Python and modern backend development.
  * Experience with FastAPI and RESTful API design.
  * Strong frontend development experience with React.js.
  * Hands-on experience building Agentic AI applications.
  * Practical experience with LLMs (OpenAI, Azure OpenAI, Anthropic, or similar), LangChain, LangGraph, Langfuse.
  * Strong knowledge of PostgreSQL.
  * Experience with Redis.
  * Understanding of software architecture, design patterns, and scalable distributed systems.
  * Experience with Git, CI/CD pipelines, and modern development practices.
  * Good communication skills and ability to work in an international environment.
  * English: B2 or higher.

Project description

Join a team developing an enterprise-grade agentic AI platform that leverages AI agents, tools, skills, and orchestration capabilities to automate cybersecurity and business processes. The project involves building and enhancing modern GenAI solutions using technologies such as Python, Azure, RAG, MCP integrations, CI/CD, observability, and scalable cloud-native architectures. You will work on designing, developing, and industrializing advanced agent-based AI applications, contributing to new use cases, integrations, security features, and platform evolution.

Responsibilities

Design, develop, and maintain full-stack applications using Python, FastAPI, and React.

Build and enhance Agentic AI solutions leveraging LLMs, LangChain, LangGraph, and AI orchestration frameworks.

Develop backend services, APIs, and integrations with external systems and AI tools.

Design and optimize data models and queries in PostgreSQL.

Implement caching, session management, and performance optimization using Redis.

Collaborate with architects, DevOps engineers, and product stakeholders to deliver scalable solutions.

Ensure code quality through testing, code reviews, and adherence to engineering best practices.

Contribute to system observability, monitoring, troubleshooting, and platform reliability.

Participate in solution design and technical leadership.

Support CI/CD processes and cloud-native application deployment.

Skills

Must have

7+ years of professional software development experience.

Strong expertise in Python and modern backend development.

Experience with FastAPI and RESTful API design.

Strong frontend development experience with React.js.

Hands-on experience building Agentic AI applications.

Practical experience with LLMs (OpenAI, Azure OpenAI, Anthropic, or similar), LangChain, LangGraph, Langfuse.

Strong knowledge of PostgreSQL.

Experience with Redis.

Understanding of software architecture, design patterns, and scalable distributed systems.

Experience with Git, CI/CD pipelines, and modern development practices.

Good communication skills and ability to work in an international environment.

English: B2 or higher.

Nice to have

Experience with security testing, application security, or secure coding practices (preferred).

Experience with Azure cloud services.

Experience with RAG (Retrieval-Augmented Generation) architectures.

Knowledge of Docker, Kubernetes, and cloud-native deployments.

Exposure to cybersecurity, vulnerability management, or enterprise security platforms.

Other

Languages

English: B2 Upper Intermediate

• Join a team developing an enterprise-grade agentic AI platform that leverages AI agents, tools, skills, and orchestration capabilities to automate cybersecurity and business processes. The project involves building and enhancing modern GenAI solutions using technologies such as Python, Azure, RAG, MCP integrations, CI/CD, observability, and scalable cloud-native architectures. You will work on designing, developing, and industrializing advanced agent-based AI applications, contributing to new use cases, integrations, security features, and platform evolution.

   

• Responsibilities:

  * Design, develop, and maintain full-stack applications using Python, FastAPI, and React.
  * Build and enhance Agentic AI solutions leveraging LLMs, LangChain, LangGraph, and AI orchestration frameworks.
  * Develop backend services, APIs, and integrations with external systems and AI tools.
  * Design and optimize data models and queries in PostgreSQL.
  * Implement caching, session management, and performance optimization using Redis.
  * Collaborate with architects, DevOps engineers, and product stakeholders to deliver scalable solutions.
  * Ensure code quality through testing, code reviews, and adherence to engineering best practices.
  * Contribute to system observability, monitoring, troubleshooting, and platform reliability.
  * Participate in solution design and technical leadership.
  * Support CI/CD processes and cloud-native application deployment.

   

• Mandatory Skills Description:

  * 7+ years of professional software development experience.
  * Strong expertise in Python and modern backend development.
  * Experience with FastAPI and RESTful API design.
  * Strong frontend development experience with React.js.
  * Hands-on experience building Agentic AI applications.
  * Practical experience with LLMs (OpenAI, Azure OpenAI, Anthropic, or similar), LangChain, LangGraph, Langfuse.
  * Strong knowledge of PostgreSQL.
  * Experience with Redis.
  * Understanding of software architecture, design patterns, and scalable distributed systems.
  * Experience with Git, CI/CD pipelines, and modern development practices.
  * Good communication skills and ability to work in an international environment.
  * English: B2 or higher.

   

• Nice-to-Have Skills Description:

  * Experience with security testing, application security, or secure coding practices (preferred).
  * Experience with Azure cloud services.
  * Experience with RAG (Retrieval-Augmented Generation) architectures.
  * Knowledge of Docker, Kubernetes, and cloud-native deployments.
  * Exposure to cybersecurity, vulnerability management, or enterprise security platforms.

• Languages:
  • English: B2 Upper Intermediate

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Role Overview: You will take ownership of the search infrastructure for Ask Seeking Alpha — a financial intelligence platform powered by LLMs. Your main goal is to ensure our AI agents can find the exact financial data they need (articles, transcripts, news) in milliseconds. You will work on the Retrieval layer of our RAG architecture, combining traditional text search with modern vector search techniques.

Tech Stack: Elasticsearch (v8+), Python (FastAPI, Asyncio), OpenAI Embeddings, LangChain, LangSmith.

The Senior Search Engineer will be engaged with the company as a contractor (Private Entrepreneur).

What You'll Do

• Search Engine Development: Design and implement Hybrid Search strategies. You will figure out how to best combine "keyword matching" (finding specific tickers like 'AAPL') with "semantic search" (finding concepts like 'revenue growth').
• Relevance Tuning: You are responsible for the quality of search results. You will build systems to measure and improve how well the search engine answers user queries (using tools like LangSmith).
• Vector Search & RAG: Manage the integration of OpenAI embeddings into Elasticsearch. You will solve challenges related to indexing long documents (e.g., earnings transcripts) so the AI retrieves only the most relevant parts.
• Performance Optimization: Optimize Elasticsearch queries and index settings to ensure low latency, even for complex queries with many filters.
• Python Backend: Develop and maintain the Python services that build queries and process results. We use FastAPI and Asyncio heavily.

Requirements

• Elasticsearch Expert: 5+ years of experience working with Search Engines in production. You understand how indices, analyzers, and mappings work "under the hood."
• Search Theory: You understand the difference between Lexical Search (keywords) and Vector Search (meaning), and know when to use which.
• Python Proficiency: Strong experience with Python 3.10+. You are comfortable writing asynchronous code (async/await) and building APIs.
• Data Engineering: Experience designing data schemas for search (how to structure JSON documents for efficient retrieval).

Nice to Have

• Experience building RAG (Retrieval-Augmented Generation) pipelines.
• Familiarity with LangChain or similar LLM frameworks.
• Experience with Evaluation tools (like LangSmith) to test search quality automatically.
• Background in Finance (understanding tickers, earnings calls, etc.).

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Role Overview: We are developing Ask Seeking Alpha — a high-load financial analysis system based on Large Language Models. The architecture is built on complex multi-agent orchestration using LangGraph, FastAPI, and Elasticsearch.

We are looking for a Senior Backend Engineer specialized in Generative AI to design agent workflows, optimize interactions with models (OpenAI, AWS Bedrock), and ensure the reliability of non-deterministic systems in production.

The Senior Python AI Engineer will be engaged with the company as a contractor (Private Entrepreneur).

Tech Stack: Python (Asyncio), FastAPI, LangChain, LangGraph, Pydantic, Elasticsearch, AWS Bedrock / OpenAI API, LangSmith.

What You'll Do

• Agent Architecture: Design and implement complex agent orchestration logic using LangGraph. You will define state management, conditional routing, and error handling within the agent graph.
• Tool Engineering: Build and optimize the tool layer (function calling) that allows LLMs to interact with internal financial APIs and databases accurately.
• Performance Optimization:

-Reduce end-to-end latency through asynchronous processing and streaming (SSE).

-Implement semantic caching strategies to minimize API costs and response time.

-Optimize token usage without sacrificing answer quality.

• Observability & Evaluation: Implement automated evaluation pipelines using LangSmith. You will be responsible for setting up regression testing for prompts and agents to measure quality (correctness, faithfulness) before deployment.
• Advanced RAG: Refine retrieval strategies. Work on hybrid search implementation (Keyword + Vector), re-ranking, and query expansion to feed the most relevant context to the model.

Requirements

• Python Expert: Strong proficiency in modern Python. Deep understanding of asynchronous programming (asyncio) patterns is mandatory, as our entire I/O pipeline (Network, DB, LLM) is non-blocking. Experience with FastAPI and Pydantic (v2).
• Agentic Frameworks: Production experience with LangChain. Hands-on experience or deep conceptual understanding of LangGraph (or similar state-machine-based agent frameworks).

Deep LLM Expertise (What we mean by "Deep"):

• Non-determinism Management: Strategies for handling LLM hallucinations and ensuring reliable outputs (e.g., self-correction loops, specific prompting techniques like CoT/ReAct).
• Structured Outputs: Experience forcing LLMs to adhere to strict schemas (Pydantic/JSON mode) for reliable downstream processing.
• Context Optimization: Advanced strategies for managing limited context windows (summarization chains, sliding windows, selective context injection) beyond simple truncation.
• Inference Economics: Understanding the trade-offs between model size, latency, and cost (e.g., when to route to GPT-4 vs. a smaller/faster model).

Nice to Have

• Experience with Elasticsearch (DSL queries, analyzers).
• Knowledge of vector databases and embedding models.
• Background in FinTech or familiarity with financial data structures.

Job Description:
We are looking for a Senior Network Software Engineer with experience developing software for networking products such as routers, switches, network operating systems, and networking platforms.
The ideal candidate has strong C/C++ and Python development skills, hands-on experience with networking technologies and protocols, and a proven background in BSP, control plane, data plane, and automated test development for networking devices.

Responsibilities:
— Develop software for networking devices using C/C++ and Python.
— Participate in BSP, control plane, and data plane development.
— Develop automated test solutions for networking products using Python and Pytest.
— Perform software and hardware bring-up, integration, and debugging activities.
— Develop and maintain networking features, protocols, and related software components.
— Analyze network traffic and troubleshoot networking and software issues.
— Work closely with engineering teams on software development, testing, and integration activities.

Requirements:
— Experience developing software for networking devices such as routers and switches.
— Strong C/C++ and Python programming skills.
— Experience with BSP, control plane, or data plane development.
— Experience developing automated tests using Python and Pytest.
— Experience with software and hardware bring-up and integration.
— Strong understanding of networking fundamentals, including routing, forwarding, VLANs, TCP/IP, and UDP.
— Experience with networking technologies and protocols such as LACP, ECMP, ACLs, SPAN/RSPAN/ERSPAN, BGP, OSPF, RIP, and IS-IS.
— Experience with networking test and analysis tools such as Scapy, traffic generators, and traffic analyzers.
— Experience with Git/GitHub and Linux-based systems.

Important: If you feel this opportunity matches your background, please ensure your CV clearly reflects the key skills and experience required for the role. CVs that explicitly demonstrate relevant networking, C/C++, Python, BSP, control plane/data plane, and test automation experience can be reviewed and validated more efficiently, helping us move qualified candidates through the recruitment process faster.

Required languages

English

B2 - Upper Intermediate
    

About DualEntry

Founded in 2024, DualEntry is one of the world’s fastest-growing AI startups.

Our AI-native ERP lets accounting teams achieve more in less time. $5M-ARR businesses to NYSE-listed companies trust DualEntry to automate away manual data entry work with AI. We’re finally making the one-person finance team a reality and putting the pain of legacy ERPs from the 1990’s in the past.

We operate with urgency and ownership. We move fast.

Why This Role Matters Now

Since starting 18 months ago, we’ve raised $100M from world-class investors such as Lightspeed Venture Partners, Khosla Ventures, Contrary Ventures and Google Ventures.

We got there by moving incredibly fast and hiring and sharp, hard-working people.

We’re a small team, growing fast with huge momentum - join early.

This is an intense, hands-on role with full ownership. We expect you to push for excellence and raise the bar.

 

📍 Location: Remote - this role is available across all countries with 4hr+ overlap for the US ET timezone (NYC HQ)

Where you'll create impact

• You’ll own end-to-end execution for backend systems and infrastructure
• You’ll build APIs, services, and real-time systems handling complex accounting logic
• You’ll collaborate with founders, product, and frontend engineering to turn complex workflows into secure, performant systems
• You’ll design, implement, and ship production-ready features at high speed
• You’ll manage data migrations, scaling challenges, external integrations, and end-to-end reliability
• You’ll drive measurable outcomes that accelerate DualEntry’s product velocity and stability

What sets you up for success

• Hardcore work ethic and high agency
• 8+ years of experience in backend engineering
• Proven track record in high-growth, high-ownership environments
• Strong skills in PostgreSQL, SQL, ORMs, migrations, and schema design
• Experience with AWS or comparable cloud infrastructure
• Strong API design and testing experience
• Understanding of CI/CD, deployment, and production readiness
• Bonus: expertise in Python and modern frameworks (FastAPI, Flask, or Django)
• Ability to manage complex systems with evolving requirements
• Fluent English (C1+) with clear communication

Why you’ll thrive here

• Significant equity ownership in one of the top AI companies in the world
• You’re joining early and will grow with DualEntry
• Your feedback shapes the product directly
• High-speed culture
• High-trust environment with high expectations
• Ambitious mission - ERP is one of the largest B2B software markets in the world ($220bn per year), this is a once in a lifetime opportunity to build the next generation ERP in an industry that has not seen new entrants in 30+ years

Benefits & Perks

• Base Salary: $150,000 - $250,000 USD
• Equity: $50,000 - $80,000 USD
• Contract type: B2B
• Remote-first team - the fastest team you will have ever worked with
• Time Off: 15 PTO days + 12 public holidays
• Visa sponsorship option for relocation to NYC within 2+ years
• Early-stage role with high autonomy and real long-term upside
• Enjoy a learning & development budget for courses, certifications, and language learning to keep growing your skills.
• Work where you feel most productive at co-working spaces or from your home office with support for setup, internet, and phone.
• Plus, wellness perks and more to make your workday even better!

We hire the best, expect the best, and give you the masterclass of your career - an archaic and huge industry like ERP only goes through a restructure like this once in a lifetime. It’s hard, it’s intense, and it’s the most rewarding work you’ll ever do.

If you’re hungry, driven, and ready to build something massive, climb aboard!

We're a fast-growing tech company building modern, innovative digital products - and we're looking for a Python Developer to join our team in Lviv. If you care about clean code, solid architecture, and working in an environment where your input actually matters, keep reading.

What you'll be doing

You'll be part of a cross-functional team working on real, meaningful projects - building scalable backend solutions, designing APIs, and helping shape the technical decisions that move our products forward.

What we're looking for

• Solid hands-on experience with Python
• Strong knowledge of Django and Django REST Framework
• Good understanding of OOP principles and clean code practices
• Experience working with relational databases - MySQL and/or PostgreSQL
• Confident use of Git and version control workflows
• Responsible, self-motivated, and comfortable working both independently and as part of a team

What we offer

• Full-time, in-office position in Lviv
• Official employment and a competitive salary based on your skills and experience
• Company-provided equipment
• A well-structured work schedule
• A friendly, supportive team and a comfortable office environment
• Mentorship and guidance from experienced colleagues
• Interesting and technically challenging projects to grow on

How to apply

Send us your CV - we review every application and get back to candidates promptly. This could be the start of something great.