{"id":846489,"url":"https://alion.io/job/lithosquare-senior-software-engineer-pythontypescript","title":"Senior Software Engineer (Python/TypeScript)","company":{"id":680154,"name":"Lithosquare","domain":"lithosquare.com","url":"https://alion.io/company/lithosquare","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":103000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":35},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Helm","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Temporal","optional":false},{"name":"TypeScript","optional":false},{"name":"Django","optional":true},{"name":"FastAPI","optional":true},{"name":"FluxCD","optional":true},{"name":"GitHub Actions","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Next.js","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Terraform","optional":true},{"name":"Vite","optional":true}],"status":"live","first_seen_at":"2026-08-17T14:19:51Z","employer_posted_date":"2026-08-17","last_verified_at":"2026-09-28T22:29:45Z","board_verified":true,"closed_at":null,"days_open":42,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":42},"description":"About the company\nThe transition to a sustainable future requires discovering new mineral resources to power clean technologies and renewable energy solutions. From lithium for electric vehicle batteries, to copper for wind turbines, and rare earth elements for electronics - these minerals are the building blocks of our energy transition.\nLithosquare radically speeds up mineral exploration by combining foundational AI, geological expertise, and real-world data - to reduce uncertainty, prioritize the right targets, reduce costs and accelerate discovery.\nBased in Paris, Lithosquare gathered an exceptional team of geologists, scientists, AI engineers, and data specialists to work as one - from field sampling to model optimization - and push the boundaries of what’s possible.\nAbout the job\nThe primary role of the Senior Software Engineer (Python/TypeScript) is to design, build, and maintain both the client-side interfaces and server-side architecture powering our Geology OS. This role plays a critical part in delivering robust, high-performance, and scalable end-to-end solutions that combine agentic AI, cartography, 3D modeling, and automated report generation to support complex exploration workloads.\nThe ideal candidate will have strong programming skills, deep experience with both back-end (python) and front-end (React) frameworks, cloud platforms, and a solid understanding of modern full-stack architectures - as well as hands-on experience with AI systems, including LLMs and agentic approaches.\nThe role is based in Paris with a flexible remote working policy.\nWhat you’ll do\nArchitect the Geology OS: design, implement, and maintain full-stack components and services, ensuring they are scalable, secure, and highly available to power our core platform;\n\nBuild advanced interfaces: develop high-quality, responsive user interfaces (React), integrating cartography, 3D modeling, and interactive data visualizations for an optimal user experience;\n\nEngineer robust back-end APIs: develop APIs and back-end services (Python) that integrate seamlessly with the front-end application and third-party platforms;\n\nIntegrate agentic AI: collaborate with AI engineers and scientists to deploy agentic AI systems directly into the Geology OS enabling sophisticated features such as contextual chat with documents and maps, AI-driven 3D model generation, and automated technical report generation;\n\nCross-functional collaboration: partner with various profiles (AI engineers, back-end engineers, forward deployed engineers, geology experts) to deliver end-to-end features, from database to UI;\n\nLead technical design: take part in architectural decisions for both front-end and back-end systems, ensuring they align with a modern, AI-driven system architecture;\n\nCode excellence: write clean, maintainable, and well-documented code for both client and server-side applications;\n\nProduction ownership: deploy and operate full-stack services in production while monitoring their performance and reliability in a high-stakes exploration environment.\n\nTechnical Stack\nLanguages: Python (expert level), JavaScript / TypeScript, Bash\n\nBack-End Frameworks: Django / FastAPI and relational database (Postgres)\n\nFront-End Frameworks: React / NextJS / Vite\n\nFull-Stack Development: Micro-service architecture, RESTful API design, state management\n\nInfrastructure & Automation: Terraform; GitHub Actions, FluxCD\n\nContainerization & Orchestration: Docker; Kubernetes; Helm\n\nEvent-Driven & Workflow Orchestration: Temporal.io, Airflow\n\nWhat we are looking for\n5+ years of hands-on experience in full-stack development, with a strong track record of building robust, maintainable, and scalable end-to-end systems;\n\nDeep expertise in Python and React development;\n\nStrong understanding of Kubernetes and containerized environments;\n\nAI Implementation: proficiency in applied AI, specifically building agentic systems and LLM-powered features that interact with complex data structures.\n\nStrong foundation in algorithms, data structures, and performance optimization for both front-end and back-end systems;\n\nProven track record in agile teams, with a focus on testing, integration, and continuous deployment (CI/CD);\n\nPassion for writing clean, efficient, and maintainable code;\n\nCustomer-focused mindset with the ability to thrive in fast-paced, collaborative, and startup environments.\n\nBonus: Knowledge of geospatial data processing & cartography, 3D modeling and visualization.\n\nPerks & Benefits\nOffices located in the heart of Paris\n\nStrong culture of ownership & entrepreneurship\n\nOpportunity to significantly contribute to energy transition\n\nCollaborative work environment with world-class experts in geology, AI, and data science\n\nFlexible work arrangements enabling work-life balance\n\nSustainable mobility allowance (Forfait Mobilité Durable)\n\nGym pass\n\nFrequent team drinks, events & regular off-sites\n\nCompetitive salary package\n\nMeal vouchers and health insurance coverage (Alan)\n\nJoin Lithosquare and become part of a passionate team driving innovation at the intersection of AI and Earth exploration. Let’s make a tangible difference together!","description_format":"text","description_chars":5156,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Health insurance","Insurance coverage"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Geological Survey"],"lifecycle":[{"event":"open","at":"2026-09-13T00:59:18Z"}],"liveness":{"score":51,"band":"ok","label":"Likely open","p_open":1,"p_active":0.678,"p_room":0.75,"age_days":41,"expected_fill_days":42,"reasons":["conf:3","win:late"],"computed_at":"2026-09-28T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/lithosquare-senior-software-engineer-pythontypescript","json_url":"https://alion.io/job/lithosquare-senior-software-engineer-pythontypescript.json","meta":{"generated_at":"2026-09-28T23:27:03Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1071,"day_limit":5000,"remaining_today":3929,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}