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Sr. Backend Software Engineer (Python) (m/w/x)

New EuropeFull-timeSenior

Senior Python backend engineer on Grover's Risk Engineering team in Berlin, building the platform that approves or declines device subscription orders in real time — rule engines, FastAPI/GraphQL decision APIs, Kafka event flows, and credit bureau/fraud integrations on AWS, Docker and Kubernetes.

API AWS AWS Bedrock Datadog Docker +15 skills

Java Developer (Regular to Senior) | Backend-focused Full Stack (f/m/d)

New HybridEuropeFull-timeSenior

Backend-focused full-stack Java developer at Accurids, a pharma/life-science data platform in Cologne (hybrid). You design Java 21/Spring Boot services and GraphQL/REST APIs on PostgreSQL, own features end-to-end into React/TypeScript frontends, and use AI tools like Cursor, Claude and Gemini daily in an AI-native engineering culture.

Agentic AI AI API Api Design AWS +20 skills

60K – 100K €

Software Development Engineer - Java + Distributed Systems

New HybridAPAC Licensed UK sponsor Licensed NL sponsor Canada LMIA employer

Software Development Engineer (hybrid, Hyderabad) at Zscaler building and operating high-scale distributed services for the Zero Trust Exchange cloud security platform. Day to day involves Java microservices at enterprise scale, architectural guidance, coding/testing/CI-CD best practices, and cross-team performance and reliability initiatives.

Agentic AI Agile AI Ansible API +29 skills

The Builder Studios

Backend engineer Amsterdam or Remote (EU timezones) - Full-time

New RemoteEuropeFull-time

Backend developer at Eli5 (The Builder Studios), an Amsterdam studio building software for startups and large companies. You design and build clean, maintainable backend systems in PHP/Laravel and/or Node.js, shape solution architecture and APIs with clients, and collaborate with front-end developers and designers — from the Amsterdam office or remote within EU timezones.

Agile API Design Patterns Git GitLab +15 skills

Marketing Report (een B2B nieuwsplatform voor marketeers)

[Vacatures] Endeavour zoekt een Full-stack Developer

New EuropeFull-time

Full-stack Developer at Endeavour, a 150-person full-service digital agency in Haarlem, building and maintaining complex web applications end to end and adding AI-driven features (LLM APIs, agents, vector databases). Core stack: PHP (Laravel/Symfony), Python, TypeScript, SQL, with DevOps/CI/CD on AWS/Azure/GCP.

AI Anthropic API AWS Azure +14 skills

Full Stack Developer - Shopify Experience

New EuropeFull-time

Salt is hiring a senior full-stack developer to build custom Shopify apps, backend microservices, and ERP/WMS/POS integrations for e-commerce clients, while mentoring developers and setting architectural and CI/CD standards. Core stack: TypeScript, Node.js, PostgreSQL, Redis, GraphQL/REST, React/Remix, Docker.

API CI/CD Cloud CSS Docker +13 skills

(Senior) Full stack developer

New RemoteEuropeFull-timeSenior

Full stack developer at a small Dutch software firm building long-lived custom web applications for regular clients — from backend to frontend using Laravel, Node.js, Vue, React and TypeScript, PostgreSQL, and REST/GraphQL APIs — choosing the stack per project and working directly with clients.

AI API GraphQL Laravel Node.js +4 skills

blooming people

Senior Full Stack Developer

New HybridEuropeSenior

Senior full stack developer joining a fast-growing international high-tech retailer in Nieuwegein to build on a modern headless, composable commerce platform: server-side Node.js, GraphQL APIs and managed cloud services, while coaching the existing team. Hybrid role (2 office days); salary up to ~€7,200/month gross, OTE ~€105k/year.

API Cloud GraphQL Node.js

up to 7K € / mo

Full stack developer

Full stack developer at SnelStart (Amersfoort) building a platform that connects banking, accounting, lending and other financial services for SMEs. Day-to-day work involves cloud-native, serverless development with TypeScript, Node.js, GraphQL and React (Native)/Expo.

Cloud Cloud Native GraphQL Node.js NoSQL +3 skills

4K – 7K € / mo

Full Stack Developer

Full stack developer building Reconcept's SaaS platform for medical training, used by 50,000+ users across Dutch hospitals and care institutions. Work spans a Ruby on Rails backend (GraphQL, oAuth2 SSO), an Angular web app and a mobile app, with upcoming AI features like Speech-to-Text. Based in Groningen, 28-40 hrs/week.

Agile AI Angular API GraphQL +4 skills

Full Stack Developer

New EuropeFull-time

Foreside, a Netherlands-based IT staffing/consulting firm that provides full stack, frontend, backend and test engineers, is hiring a mid-senior, full-time Full Stack Developer. Work spans web services and frontends, with emphasis on Spring Boot/Node.js/.NET Core, REST/GraphQL/gRPC APIs, and auth standards like OAuth2/OpenID Connect.

Agile API CI/CD DevOps .NET +8 skills

Protofy GmbH & Co. KG

Senior Fullstack Engineer

New RemoteEuropeSenior

Senior fullstack engineer at Protofy, a Berlin-based software consultancy. You build backend services and APIs in Kotlin/Java/TypeScript plus web frontends in React/Flutter, covering data modeling, third-party integrations, cloud infra and CI/CD, working directly with clients and using agentic tools like Cursor or Claude Code daily.

Agentic AI Android API AWS Azure +29 skills

Senior Full-Stack Engineer - Analytics & AI Insights (Remote)

Senior full-stack engineer at Linktree building its creator analytics/insights platform: instrumenting events, ingesting and aggregating data, exposing it via GraphQL, and building interfaces for creators to act on their data. Stack includes TypeScript, React, Node, GraphQL, PostgreSQL/MySQL and AWS.

Analytics AWS GraphQL MySQL PostgreSQL +2 skills

Senior Full Stack Engineer - Grow

New RemoteAPACFull-timeSenior

Senior full-stack engineer on Linktree's Grow–Insights team, building the analytics surfaces creators use: event instrumentation, ingestion and aggregation, GraphQL APIs, AI-powered insights chat, and social integrations (YouTube, TikTok, Instagram). Core stack: TypeScript, React, Node, GraphQL, PostgreSQL/MySQL, AWS.

AI Analytics API AWS BigQuery +13 skills

Generation Next Fertility

Lead Clinical Automation & AI Systems Engineer

New North AmericaLead

Lead engineer at a physician-led NYC fertility practice, owning the internal automation and agentic AI stack: building multi-agent LLM workflows, human-in-the-loop review tooling, and EHR (eIVF) integrations to automate tasks like insurance verification, chart prep, and lab triage. Core stack: Python/TypeScript, LangGraph, Temporal, PostgreSQL.

Agentic AI AI API AutoGen Automation +33 skills

150K – 200K $

AI Engineer

Mid-level AI engineer (3-5 yrs) at a healthcare/pharma commercial solutions partner in Portugal, maintaining and improving production AI agents and LLM-as-a-judge tools: building agent tools, retrieval/citations, graph middleware, and observability. Core stack: Python, LLM systems, Pinecone, Meilisearch, GCP.

Agentic AI AI Analytics API Asyncio +13 skills

35K – 55K €

boostsecurity.io

Senior Python Backend Engineer

New North AmericaSenior

Senior backend engineer at BoostSecurity in Montréal owns architecture and quality for an event-driven Python microservices platform built on Kafka, Kubernetes, MariaDB, GraphQL, and AWS. The role directs AI coding agents, reviews their output, improves CI/testing infrastructure, and handles on-call production issues.

Agentic AI AI AWS Distributed Systems Event Driven Architecture +7 skills

boostsecurity.io

Senior Backend Developer

New North AmericaSenior

Senior backend developer at BoostSecurity, a Montréal startup securing the software supply chain. You architect and review an event-driven Python microservices platform (Kafka, MariaDB, GraphQL on AWS/Kubernetes), directing AI coding agents to ship features fast while owning design, testing, quality and on-call.

Agentic AI AI API Argo CD AWS +27 skills

Forward Deployed Full Stack Engineer (Active Secret Clearance)

New RemoteNorth America

A forward-deployed full stack engineer (active US Secret clearance, US citizen) embedded with a US government-facing client, gathering requirements directly from users and shipping production features into secure, constrained environments. Core stack: React/TypeScript front end, Python/Node/Java/Go back end, PostgreSQL, Docker/Kubernetes, and cloud, with LLM-powered features built under security c

Agentic AI Agile AI Android API +24 skills

Senior Software Engineer, Core Platform

Likely evergreen RemoteNorth AmericaContractSenior Licensed UK sponsor Licensed NL sponsor H-1B sponsor history Canada LMIA employer

Senior engineer on Reddit’s Core Platform team designs, scales, and mentors around APIs that power posts, comments, media, and listings for hundreds of millions of users.

AI API AWS Cloud Distributed Systems +8 skills

191K – 267K $