Kyiv, Kyiv Oblast, Ukraine Are you a talented developer looking for a remote job that lets you show your skills and get decent compensation? Join Upstaff.com, a platform that connects you with hand-picked startups and scale-ups in the US and Europe. Summary Experience in software development for more than 5 years with Python for Senior, 7+ years for Expert; Deep understanding of RDBMS systems (PostgreSQL), experience crafting high-performance queries, db optimizations, and designing db structures; Strong knowledge and practical experience with SQLAlchemy (sync and async mode in declarative and table-oriented syntax); Profound knowledge of Python frameworks such as: FastAPI (will be a big plus), Flask and in-depth knowledge of their internal architecture; Practical commercial experience in REST API developing of distributed systems (e.g. microservices, SOA); Knowledge of techniques for working with asyncio and related libraries (projects use aiohttp / tornado); Location is Ukraine (Kyiv, Zhytomyr, Vinnytsia, Khmelnytskyi, Chernivtsi, Ternopil, Rivne, Zakarpattia, Ivano-Frankivsk, Lviv, Volyn regions); The start is ASAP; The model is direct hiring. Project duration is till end of April with a high possibility to be prolonged. About the role: As an Expert Python Developer, become a part of a cross-functional development team working an exceptionally exciting client who are the leading enterprise AI SaaS company for digital transformation in the biopharmaceutical industry. Responsibilities: Design and implement complex backend features from conception through to deployment, ensuring they meet strategic business objectives; Write clean, secure, highly testable. scalable and well-documented code that adheres to coding standards and best practices; Perform comprehensive code reviews to ensure high code quality and facilitate knowledge sharing within the team; Actively participate in multiple aspects of the SDLC, including planning, development, testing, and deployment; Assist in upholding and enhancing the team`s engineering and quality standards, and support team in adopting these; Engage in the technical interviewing process. Must Have: Location = Ukraine (office meetings) Experience in software development for more than 5 years with Python for Senior, 7+ years for Expert; Profound knowledge of Python frameworks such as: FastAPI (will be a big plus), Flask and in-depth knowledge of their internal architecture; Practical commercial experience in REST API developing of distributed systems (e.g. microservices, SOA); Knowledge of techniques for working with asyncio and related libraries (projects use aiohttp / tornado); Excellent knowledge of paradigms and principles: OOP, SOLID, and GRASP, Architectural and Design Patterns, Security principles and Code testing practices; Understanding of network interactions: protocols, REST convention, auth standards and practices (oAuth 2.0, JWT); Deep understanding of RDBMS systems (PostgreSQL), experience crafting high-performance queries, db optimizations, and designing db structures; Deep knowledge and practical experience with SQLAlchemy (sync and async mode in declarative and table-oriented syntax); Experience with CI/CD tools (Azure DevOps will be a plus); Experience in deploying and managing apps in the public cloud (Azure will be a plus); Experience with Docker and Kubernetes; Advanced proficiency with unittest, pytest, mock and other common testing tools; Experience with troubleshooting, profiling and debugging of applications, refactoring process, Agile software development processes and technologies; Fluent / Upper-Intermediate English. Desirable: Participation in Data and AI products development process Azure ecosystem knowledge; Experience with Sentry and ELK stack; Flyte / Apache Airflow / NiFi / Luigy production experience and usage for ETL processes; Experience with messaging systems (RabbitMQ); Azure ecosystem knowledge; Deep knowledge alembic; Understanding db migration process and data migration problems; Python code and SQL requests profiling and optimization experience; Work with Sentry, New Relic, Raygun; Pydantic and SQLModel deep knowledgeDescription.

San Francisco, California, United States Description What you’ll do Own design→deploy of Python services (FastAPI/Django) on AWS (Lambda, Step Functions, RDS). Build/operate LLM/RAG features (retrieval, evals, latency & cost controls). Architect ingestion → normalize → truth store → actions; add idempotency, retries/DLQ, metrics & observability. Ship fast with users in the loop (warehouse/distribution ops), handle on-call, iterate 0→1. Must-haves 3–6 years shipping backend systems with clear 0→1 ownership. Production FastAPI or Django. Production AWS serverless (Lambda, Step Functions, RDS). Production LLM/RAG (not just POCs) with links/metrics. US work authorization; on-site in San Francisco (founder cadence). Nice to have Java/Spring Boot; LangChain/LangGraph; Pinecone/pgvector; supply-chain/ERP/fintech/workflow SaaS exposure. Why this role Early ownership + equity. Build AI agents that replace legacy ERPs for real operators. Work experience 3–6 years Skills Python, FastAPI, Django, AWS Lambda, AWS Step Functions, AWS RDS, PostgreSQL, pgvector, LangChain, LangGraph, RAG, LLM orchestration, Pinecone, Docker, Terraform, CI/CD, Observability, Prometheus, Grafana, Kafka (nice to have), Java, Spring Bo

Remote, Work from Home, Remote This technical support position plays an important role in identifying and addressing bugs and edge cases, utilizing a variety of technologies. You will work both individually, and as part of a team to help deliver the best possible customer experience. You will be a part of a fast-paced, challenging, and exciting work environment. We are a certified Woman and Minority Owned Business. We are seeking a candidate anywhere in the world as this is a work from home position. Must be able to meet during US business hours as needed. Required Skills: 2+ years of experience with Python Proficient with Linux systems at a CLI level Ability to troubleshoot efficiently and effectively in large and complex systems Must be able to navigate SQL databases Security practices and vulnerability prevention Team collaboration and communication skills English fluency (written/verbal) North American hours availability Remote work experience 40 hrs/week commitment Cover letter requirement with specific opening line How to Apply: Start your COVER LETTER with this in all CAPITAL LETTERS “I AM AN EXPERIENCED TECHNICAL SUPPORT ANALYST” https://forms.clickup.com/2257368/f/24wer-68337/W1BLKEV7WW435WOA80

Remote, USA We’re looking for a Senior Python Developer to join our engineering team and help build the back-end infrastructure powering Basalt’s clinical and operational platforms. This is a senior-level role for a developer who thrives in fast-paced environments, understands the unique challenges of healthcare data, and is passionate about building secure, high-performance applications at scale. You will play a critical role in leading development of our core services—working on everything from FHIR-compliant APIs and integrations with EHRs to automation of workflows and advanced data handling. Key Responsibilities: Design and implement robust, scalable, and secure backend services using Python (primarily FastAPI or Django) Build and maintain FHIR/HL7-compliant APIs for interoperability with EHR systems and third-party data providers Lead architectural discussions and drive key backend decisions around scalability, data modeling, and infrastructure Ensure compliance with HIPAA, SOC 2, and HITRUST standards in all aspects of backend development Mentor mid-level and junior developers through code reviews, pair programming, and technical design sessions Collaborate closely with front-end, product, and data teams to define and deliver impactful features Integrate with tools and services such as Epic, Cerner, or Athenahealth via standard healthcare interfaces Develop test suites and participate in continuous integration / continuous deployment (CI/CD) practices Monitor, troubleshoot, and improve application performance in staging and production environments Please note: This position is open only to candidates who are currently authorized to work in the United States and do not require sponsorship now or in the future (e.g., H-1B, OPT, or similar employment visas). * Must-Have Qualifications: 5+ years of professional experience building production-grade backend applications with Python Strong experience with FastAPI, Django, or Flask in a microservice architecture Deep understanding of healthcare data formats, including FHIR, HL7, and X12 Knowledge of HIPAA security and privacy requirements Experience working with cloud infrastructure (preferably AWS or GCP) Proficient with relational and NoSQL databases (e.g., PostgreSQL, MongoDB) Strong familiarity with Git, Docker, and CI/CD tools like GitHub Actions, Jenkins, or CircleCI Flexibility to work with new and varied technology Clear, concise communication skills—able to write and speak effectively to both technical and non-technical audiences Nice-to-Have: Experience integrating with EHR systems (e.g., Epic, Cerner, Athena) Familiarity with task queues (e.g., Celery, RQ) and async workflows Exposure to healthcare billing systems, claims workflows, or population health tools Experience with observability tools (e.g., Datadog, Prometheus, Sentry)

Remote, Work from Home, Remote As a senior software engineer, you'll join a team tackling genuinely hard problems: distributed data processing at enterprise scale, complex deduplication algorithms, and systems that need to handle billions of records without breaking. The kind of challenges that require actual engineering thinking, not just tutorial-level code. Ready to tackle complex engineering challenges that impact how the world's largest companies manage their data? Who we are NOT looking for Agencies People who are looking for a side “hustle” or are starting their own business Anyone with less than 7 years of experience Required Skills: Very proficient with Linux at the terminal level Test-driven development (TDD) and pytest proficiency 7+ years Python experience Polars experience PostgreSQL expertise: schema design, optimization, advanced queries Familiarity with, and adherence to, PEP guidelines and Python coding standards RESTful API development and design best practices Scalable architecture design for high-volume data environments Security practices and vulnerability prevention Bug identification and resolution with local testing Thoughtful development centered around performance, deeply optimized code, and proper code organization • Git version control with branching strategies • English fluency (written/verbal) • Cover letter requirement with specific opening line • Previous experience working for a US-based company.

Boston, MA, USA The Core Investment Systems team is responsible for developing technology solutions that support Arrowstreet Capital’s investment services and operations. We leverage technology to automate business processes using a combination of custom development solutions and packaged platforms. The team provides mission critical capabilities to our business users, offering solutions essential to the firm’s ability to deliver sustained alpha and meet our fiduciary commitment to our investors. We manage hundreds of portfolios for institutional clients in many geographies. Given our systematic investment process and the size of our investable universe, the need for scalable and performant systems is critical, as is a high degree of automation to accurately manage the broad spectrum of benchmarks, instruments, holdings and reference entities that feed our trading cycle. The ideal candidate is an accomplished and driven engineer with experience building complex systems using modern platforms. We value technologists who are passionate about innovation and seeking ways to continuously improve software development processes and architecture. This hands-on role involves meaningful responsibilities for designing and implementing software solutions that automate complex portions of Arrowstreet’s investment processes. Because our team levers common platforms and shared solutions developed by other groups within the Investment Technologies organization, strong collaboration and proactive communication will factor heavily on the success in this role. Responsibilities Engage with business and technology leaders to understand strategy, articulate technology options, evaluate tradeoffs, and influence key decisions. Provide technical leadership by mentoring team members and leading projects. Build new functionality and enhancements to systems currently supporting our systematic investment process. Develop a strong understanding of the flow of our investment data and identify opportunities for greater automation, performance enhancements and increased resiliency. Accelerate the migration of older systems to modern, cloud-native platforms that leverage modern compute and data models (e.g., containerization, serverless), and drive the adoption, design, and implementation of cloud-native technology solutions. Automate the software development, testing and deployment life cycle for investment process applications. Support production escalations with urgency. Minimum 7+ years professional experience in software engineering. Minimum 5+ years of experience with cloud services (AWS, GCP, Azure), with AWS preferred. Advanced proficiency with Python, both object oriented and functional development.. Strong knowledge of databases and data manipulation languages and platforms (SQL, Spark, Pandas, etc.). Proven track record of adoption, design and implementation of scalable solutions. Hands-on experience building and supporting mission-critical production systems. Good debugging skills; knowledge of automated testing. Focus on delivering value with persistent efforts to improve business processes through greater system performance and resilience. Demonstrated initiative and problem-solving skills. Outstanding communication, organization, and collaboration. Desire to take initiative and ownership in a highly technical role. Experience building solutions in the asset management or financial services industry is a plus. We maintain a friendly, team-oriented environment and place a high value on professionalism, attitude and initiative. Arrowstreet Capital is located in Boston MA and we work a hybrid schedule. (Typically once a week.)

Miami or South Florida, Florida, US What You’ll Be Doing Develop Python services and APIs that tie blockchain infrastructure to the “real world.” Build and ship smart contracts in Solidity that power mortgage tokenization. Obsess over security, reliability, and scalability. Help shape our architecture and technical roadmap. Collaborate directly with product, compliance, and ops — we’re small, so everyone has a big voice. Mentor teammates and bring best practices to everything we ship. A Day in the Life You’ll be wearing multiple hats — one minute you’re developing a Solidity contract to manage payments, the next you’re debugging a Python API that feeds data into the blockchain, then pairing with product to brainstorm a new feature, and finally debugging celery tasks to make them faster. You’ll own features end-to-end, from design to deployment, and jump into whatever part of the stack needs your expertise. Every day is hands-on; every day you make a visible impact. Our Stack Backend: Python (Django, Django Rest Framework), Celery, RabbitMQ, PostgreSQL Smart contracts: Solidity, OpenZeppelin, Hardhat/Foundry Infrastructure: AWS, Docker Blockchain: EVM-compatible chains Integrations: Web3.py, analytics 10+ years building products, with serious chops in Solidity and Python. Experience developing smart contracts (EVM-compatible). Expert with Python tools and frameworks (Django, DRF, Celery). Strong experience working with distributed systems involving multiple connected components and asynchronous programming. Strong grasp of blockchain fundamentals, DeFi, and token standards (ERC-20, ERC-721, ERC-1155). Bonus: exposure to financial services, mortgages, or asset-backed tokens.

Prague, REMOTE Work Locations: Prague · Dubai · or FULLY Remote EU candidates (EU time zone ±/-2 hrs) About Podproza Join our innovative team at Podproza, where we’re committed to making blockchain and next-generation payments safe and transparent for forward-thinking businesses. We provide strategic insights, data-driven analysis, and unmatched expertise in on-chain security solutions, offering valuable peace of mind to leading blockchain innovators. Role Overview As a Senior Platfrom/SRE at Podproza, you’ll support the technical teams to extend current products and projects while we develop exciting solutions, working on cutting-edge blockchain projects and data-driven tools to combat cryptocurrency fraud and financial crime. You’ll work in a collaborative, international team to build scalable, high-performance applications that integrate seamlessly with our analytics pipelines and distributed systems. Your Job: As the second member of our Platform team, you will focus on developing, operating, and improving our Internal Developer Platform (IDP). Our IDP is Kubernetes-native, built on Crossplane, and runs on TalOS. Your responsibilities will include: Developing new tools and features to support our development and data science teams. Participating in our on-call rotation, aiming for a zero-incident rate. Working on capacity planning and service monitoring strategies. Engaging in all necessary actions to maintain platform uptime and user satisfaction. Your Qualifications Core Experience & Skills 5+ years in Site Reliability or Platform Engineering (cloud & bare metal). Deep experience with Kubernetes and its ecosystem (Helm, Flux, Traefik, GatewayAPI, etc.). Strong scripting and programming skills (Python, Go, or similar) for automation and reliability. Solid understanding of Linux, networking, and debugging in bare-metal environments. Experience designing, maintaining, and operating microservice architectures. Familiarity with monitoring, observability, and incident response practices (e.g., DataDog). Experience with automated build pipelines, CI/CD practices. Bachelor’s degree in Computer Science, Engineering, or equivalent experience. Collaborative Mindset & Continuous Learning Comfortable collaborating in distributed teams and working asynchronously. Systematic, problem-solving approach with a proactive mindset. Strong communication skills in English, with the ability to make complex issues clear. Appetite for continuous learning and picking up new skills. Nice to Have Experience with Crossplane Knowledge of GitOps practices Experience with TalOS Familiarity with Big Data Processing Systems (e.g., Apache Spark, Kafka) Experience with Jupyter notebooks Why Join Podproza? At Podproza, you’ll be part of a team shaping the future of blockchain innovation. We believe in giving people the tools, trust, and freedom to do their best work. Career Growth Opportunities Hands-on projects at the forefront of blockchain technology Continuous learning with support for certifications, workshops, and international conferences Dedicated training budget for books, courses, and skill development Podproza Benefits & Perks Competitive salary & referral bonuses Top-notch equipment – MacBook or Linux laptop (Linux preferred for SRE roles) Work-life balance – flexible hours, 37.5-hour work week Generous time off – 25 vacation days + 5 sick days Prague Office 🇨🇿 Inspiring workspace – modern office with rooftop terrace, gym, café, and bike & scooter parking Daily meal contributions to keep you energized Flexible home office policy – remote flexibility plus on-site collaboration Comprehensive private health insurance – with English-speaking services for peace of mind Dubai Office 🇦🇪 Modern office setup Locally adapted perks aligned with regional standards and role type We ensure our remote team members have the tools and support needed to work effectively from anywhere. Benefits vary depending on location and type of employment. Ready to Make an Impact? Apply now with your CV and links to your GitHub, portfolio, or recent projects. Join us at Podproza and help transform the future of blockchain technology. Podproza s.r.o., Na Perštýně 342/1, 110 00 Prague 1 ________________________________________ By replying to this advertisement or sending your CV to Podproza s.r.o., you consent to the processing of your personal data for recruitment purposes in accordance with GDPR. You may withdraw your consent at any time in writing.

Remote / EU time zone / EU / UK / Dubai, Czech Republic Prague / Berlin based or Remote within EU time zone +/- 2 hrs About Podproza: Join our innovative team at Podproza, where we are committed to making blockchain and next-generation payments safe and transparent for forward-thinking businesses. We provide strategic insights, data-driven analysis, and unmatched expertise in on-chain security solutions, offering valuable peace of mind to leading blockchain innovators. Role Overview: As a Senior Python Software Engineer at Podproza, you’ll take a lead role in the development of our backend systems, working on cutting-edge blockchain projects and data-driven tools to combat cryptocurrency fraud and financial crime. You’ll work in a collaborative, international team to build scalable, high-performance Python applications that integrate seamlessly with our analytics pipelines and distributed systems. Key Responsibilities: Design and develop backend systems using Python (3.11+) and modern frameworks such as FastAPI. Architect and implement scalable, secure, and reliable software systems for blockchain analytics and monitoring. Collaborate with data scientists and DevOps engineers to build and deploy machine learning models and data pipelines. Build and maintain RESTful APIs, microservices, and automated workflows. Develop tools for process automation, data ingestion, and system optimization. Perform code reviews, implement unit/integration tests, and follow deployment best practices (GitLab CI, Continuous Delivery, etc.). Mentor team members, share knowledge, and contribute to engineering standards and best practices. Your Qualifications: Required: 8+ years in software development, with a focus on Python in production environments. Strong knowledge of Python core concepts, including asynchronous programming, typing, and memory management. Solid knowledge of standard algorithms and data structures. Experience with at least one Python framework (FastAPI, Flask, or Django). Solid understanding of software architecture, system design, and backend engineering. Familiarity with CI/CD pipelines, Docker, and DevOps workflows. Experience working with relational and/or NoSQL databases (PostgreSQL, MongoDB, etc.). Excellent problem-solving skills and the ability to work independently. Fluency in English (written and spoken); Czech is not required. Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. Bonus Points (Preferred Skills): Exposure to blockchain technology, Web3, or on-chain analytics. Experience with graph algorithms. Experience with cloud platforms like AWS, GCP, or Azure. Familiarity with Spark, Redis, or Kafka. Knowledge of data science pipelines, ETL processes, or machine learning model deployment. Technologies We Use: Python, FastAPI, Spark, Redis, PostgreSQL, Docker, Kubernetes, GitLab CI, AWS, GCP.

Remote, United States, United States TECH | Backend Python Developer 3-5 years of experience Location: United States - Remote NOTE: Must be authorized to work in the United States as secret clearance may be needed in the future Hours: East coast hours Why This Role Matters: Are you passionate about building robust, high-performance backend systems? As a Backend Python Developer, you’ll play a key role in shaping the company’s technology initiatives, collaborating closely with front-end developers, product owners, and QA engineers to deliver cutting-edge software solutions. You’ll work with modern tools like FastAPI, NATS, and Jira, contributing to projects that have real-world impact across Defense, Transportation, Utilities, Public Safety, and Telecoms. What You’ll Do: Design, implement, and maintain clean, efficient, and reusable Python code for backend services. Collaborate with cross-functional teams to deliver high-quality, scalable software solutions. Leverage modern version control practices with Git to streamline development. Contribute to innovative solutions that solve complex, mission-critical challenges. Skills & Experience We’re Excited About: Backend Python Development – Proven experience building and maintaining backend systems. FastAPI – Experience building APIs and services using the FastAPI framework. Git – Strong version control skills to manage code efficiently. Jira – Comfortable tracking tasks and collaborating using Jira. Bonus Expertise: SDR (Software Defined Radio), NATS.io, NumPy/SciPy for scientific computing, and RF (Radio Frequency) knowledge.