Backend Engineer

• Részvétel az üzleti igények technikai tervezésében és megvalósításában
• REST API-k tervezése és implementálása
• Microservice alapú rendszerek fejlesztése
• Code review-k és technikai döntésekben való aktív részvétel
• Szoros együttműködés a tesztelőkkel, üzleti elemzőkkel és a projektcsapattal

Java Fejlesztő

• Join a product team building payment infrastructure for merchants and partner platforms
• Own end-to-end payment flows in TypeScript/NestJS services, including authorization, capture, void, refund, dispute handling, and payout initiation and confirmation
• Build and maintain acquirer and processor integrations using clean internal abstractions
• Design embedded and hosted checkout experiences, including hosted fields, iframes, and tokenization, to minimize PCI scope
• Implement fee calculation and rate logic, including tiers, interchange-plus, flat structures, rounding rules, special rates, and edge cases
• Build reconciliation and settlement layers matching processor reports and settlement files against internal records
• Design event handling with idempotency keys, out-of-order and duplicate webhooks, retries with backoff, and state machines
• Integrate fraud, bank-account verification, and KYC providers and tune decisioning against real outcomes
• Handle ACH mechanics, including submission windows, returns, return codes, NOCs, and retry rules
• Maintain domain correctness, complete audit trails, and reconciliation evidence
• Act as the team's payments expert, advise product on rail capabilities, and review payment-adjacent code
• Collaborate daily with a US-based team with 4–6 hours of overlap with US Central Time

Senior Backend Engineer – Payments, Go, TypeScript, Node.js

• Build and evolve systems collecting and maintaining 400M+ creator profiles across Instagram, TikTok, and YouTube
• Keep billions of data points fresh for search, analytics, APIs, and customer-facing products
• Design resilient services handling third-party API instability, rate limits, provider outages, platform changes, and partial failures
• Improve collection coverage and freshness while controlling request, proxy, storage, and compute costs
• Own the full production lifecycle from problem definition and architecture through coding, review, release, monitoring, and iteration
• Build monitoring, observability, and operational safeguards to detect gaps and regressions
• Collaborate with Data Search, Data Insights, product teams, and company leadership
• Participate in system design, indexing dependency work, request-routing reviews, and data-quality improvements

Senior Backend Engineer, Data Core

• Develop and maintain backend services and APIs using Python
• Design and implement event-driven workflows using AWS Step Functions to orchestrate business processes
• Integrate and leverage Large Language Models (LLMs) with AWS Bedrock to build AI-powered features
• Utilize and manage AWS Lambda, API Gateway, DynamoDB, Aurora/Postgres, and S3
• Design and build large-scale, high-availability systems with performance, reliability, and security
• Work with microservices and containerized environments using Docker and Kubernetes/EKS
• Collaborate with front-end developers, product managers, and data scientists to deliver end-to-end solutions

Backend Developer, Gen AI

• Take technical ownership of dedicated modules/streams inside the project
• Design and implement new features
• Implement standard methodologies and SOLID principles
• Refactor and improve the existing code base
• Participate in code reviews and coach and mentor less experienced team members
• Work closely with the QA team to implement features and bug fixes
• Contribute to the software development community within the company
• Promote out-of-the-box thinking and ideas

Java Developer, Angular

• Own end-to-end data extraction workflows across complex websites
• Ensure complete coverage, accuracy, and reliable delivery of structured datasets
• Use available tools and custom workflows to accelerate data collection, validation, and task execution
• Extract data reliably from dynamic and interactive web sources, adapting to JavaScript-rendered content and changing site behavior
• Enforce data quality through validation checks, cross-source consistency controls, formatting specifications, and systematic verification
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Utilize tools such as Apify, OpenRouter, and other technologies

Senior Python Data Scraping Engineer – Freelance

• Own end-to-end data extraction workflows across complex websites, ensuring complete coverage, accuracy, and reliable delivery of structured datasets
• Leverage tools and custom workflows to accelerate data collection, validation, and task execution while meeting defined requirements
• Ensure reliable extraction from dynamic and interactive web sources, adapting approaches for JavaScript-rendered content and changing site behavior
• Enforce data quality standards through validation checks, cross-source consistency controls, formatting specifications, and systematic verification before delivery
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Apply expertise in web scraping, data extraction, and data processing for the Tendem project
• Work independently to solve non-trivial problems and troubleshoot technical issues

Senior Python Data Scraping Engineer, Freelance

• Build high-performance backend services and APIs powering enterprise-grade SaaS applications
• Build scalable, secure Node.js microservices and integrations within the Salesforce ecosystem
• Develop modern front-end experiences using Vue.js and TypeScript
• Build CI/CD pipeline tooling, automation frameworks, and developer productivity infrastructure
• Implement real-time data processing and event-driven architectures handling sensitive enterprise data at scale
• Own significant parts of the architecture and ship production code
• Collaborate directly with engineering leadership, product managers, and the CEO
• Own systems end-to-end and contribute during the company’s aggressive growth phase

Senior Node.js Developer

• Own end-to-end data extraction workflows across complex websites, ensuring complete coverage, accuracy, and reliable delivery of structured datasets
• Leverage available tools and custom workflows to accelerate data collection, validation, and task execution while meeting defined requirements
• Ensure reliable extraction from dynamic and interactive web sources, adapting approaches for JavaScript-rendered content and changing site behavior
• Enforce data quality standards through validation checks, cross-source consistency controls, formatting specifications, and systematic verification before delivery
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Handle specialized data scraping workflows for real-world applications within the Tendem project using tools such as Apify, OpenRouter, and other technologies

Senior Python Data Scraping Engineer

• Own end-to-end data extraction workflows across complex websites
• Ensure complete coverage, accuracy, and reliable delivery of structured datasets
• Use tools and custom workflows to accelerate data collection, validation, and task execution
• Extract data reliably from dynamic and interactive web sources, including JavaScript-rendered content
• Adapt scraping approaches to changing site behavior
• Enforce data quality through validation checks, cross-source consistency controls, formatting specifications, and systematic verification
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes