{"id":3970433,"url":"https://alion.io/job/lean-solutions-group-fullstack-developer","title":"Fullstack Developer","company":{"id":3775695,"name":"Lean Solutions Group","domain":"leangroup.com","url":"https://alion.io/company/leangroup-com","size_band":"201-500","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Jobvite","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Colombia"],"countries":["CO"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Express","optional":false},{"name":"JavaScript","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Tailwind CSS","optional":false},{"name":"TypeScript","optional":false},{"name":"Amazon EC2","optional":true},{"name":"Amazon ECS","optional":true},{"name":"Amazon EKS","optional":true},{"name":"Amazon S3","optional":true},{"name":"AWS Lambda","optional":true},{"name":"GitLab CI","optional":true},{"name":"GraphQL","optional":true},{"name":"Jenkins","optional":true},{"name":"Kubernetes","optional":true},{"name":"LLM","optional":true}],"status":"live","first_seen_at":"2026-11-09T15:51:44Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T15:51:44Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Description\nCompany Overview:\nGlobal Technology Solutions is a rapidly expanding organization situated in Medellín, Colombia. We pride ourselves on possessing one of the most influential networks within software development and IT services for the entertainment, financial, and logistics sectors. Our corporate projections offer a multitude of opportunities for professionals to elevate their careers and experience substantial growth. Joining our team means engaging with expansive engineering teams across Latin America and the United States, contributing to cutting-edge developments in multiple industries.\nWe are seeking a highly skilled and motivated Fullstack Developer (Senior Backend / Junior Frontend) to join our dynamic engineering team. This role is responsible for designing, developing, and deploying robust, scalable, and high-performance applications. The ideal setup for this position requires deep expertise in backend architecture using Node.js, PostgreSQL, and MongoDB, alongside foundational, junior-level proficiency in the frontend using React and Tailwind CSS. A strong passion for best practices, cloud infrastructure, and AI integration is essential.\nPosition Title: Fullstack Developer (Senior Backend / Junior Frontend)\nLocation: Remote\nWhat you will be doing:\nDesign, code, and test high-quality features and services, primarily driving our back-end (Node.js/Express) architecture while providing junior-level support to our front-end (React/Tailwind) applications.\n\nDemonstrate deep proficiency in the Node.js environment, using TypeScript, JavaScript, and Express, alongside a working knowledge of React.\n\nSupport technical design discussions, define system architecture, and ensure solutions are scalable, secure, and cost-effective within the AWS environment.\n\nArchitect and manage data models, demonstrating strong capabilities across both relational (PostgreSQL) and NoSQL (MongoDB) databases.\n\nIntegrate and leverage Large Language Models (LLMs) and AI tools into our core product offerings.\n\nMaintain continuous integration and continuous deployment (CI/CD) pipelines and infrastructure using Infrastructure as Code (IaC) principles.\n\nManage Docker-based AWS Deployments.\n\nConduct rigorous backend code reviews, establish coding standards, and actively mentor mid-level and junior developers on best practices and complex technical concepts.\n\nCollaborate with cross-functional teams to define, design, and ship new features.\n\nWrite clean, maintainable, and efficient code while troubleshooting and debugging complex applications.\n\nRequirements & Qualifications: To excel in this role, you should possess:\nBackend (Senior-Level Expertise):\nNode.js & Frameworks: Expert-level development (+5 years) using Node.js and frameworks such as Express.js.\n\nDatabase Expertise: Strong knowledge of relational (PostgreSQL) and NoSQL (MongoDB) databases, including complex schema design, migrations, and query optimization.\n\nArchitecture & Security: Strong understanding of security principles, including authentication (JWT, OAuth), authorization, data encryption, and building scalable RESTful APIs.\n\nExperience: 5+ years of experience in designing, developing, and maintaining complex Node.js ecosystems and products.\n\nFrontend (Junior-Level Proficiency):\nJavaScript/TypeScript: Solid grasp of modern JavaScript (ES6+) and an understanding of TypeScript.\n\nReact Foundation: Hands-on experience with React.js, including a basic understanding of Hooks, Context API, and component lifecycles.\n\nStyling: Proficiency in using Tailwind CSS to build responsive, modern user interfaces.\n\nExperience: 1 to 3 years of practical experience contributing to React-based frontends.\n\nGeneral Qualifications:\nBachelor’s degree in Computer Science, Engineering, or a related technical field.\n\nNice to Have Skills (Highly Desired):\nAI / LLM Experience: Background or hands-on experience integrating and working with Large Language Models (LLMs) and generative AI APIs, as our platforms utilize these heavily.\n\nAWS Core Services: Proven experience deploying and managing applications on AWS, utilizing services such as:\nCompute: EC2, AWS Lambda (Serverless), ECS/EKS (Containerization).\n\nData & Storage: S3, RDS.\n\nNetworking: VPC, Route 53, and Load Balancers (ALB).\n\nGraphQL: Proficiency or familiarity with designing and querying GraphQL APIs.\n\nCI/CD: Experience setting up and maintaining automated pipelines using tools like AWS CodePipeline, GitLab CI, or Jenkins.\n\nLeadership: Experience in a role that required leading or mentoring other engineers.\n\nSoft Skills:\nProven ability to work collaboratively across various departments, promoting cooperation to identify issues proactively and develop comprehensive solutions.\n\nExceptional problem-solving and decision-making skills to address unique and complex challenges independently and through teamwork.\n\nDemonstrated initiative in learning and understanding the business and industry to contribute strategically to project roadmaps in partnership with Product Managers.\n\nWhy you will love GTS:\nJoin a powerful tech workforce and help us change the world through technology.\n\nProfessional development opportunities with international customers.\n\nCollaborative work environment.\n\nCareer path and mentorship programs that will lead to new levels.\n\nJoin GTS and contribute to shaping the data landscape within a dynamic and growing organization. Your skills will be honed, and your contributions will play a vital role in our continued success. Lean Tech is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.","description_format":"text","description_chars":5647,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Business Process Outsourcing (BPO)","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-11-09T15:51:44Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":12,"reasons":["conf:3","win:early"],"computed_at":"2026-11-09T19:47:12Z"},"pay":null,"html_url":"https://alion.io/job/lean-solutions-group-fullstack-developer","json_url":"https://alion.io/job/lean-solutions-group-fullstack-developer.json","meta":{"generated_at":"2026-11-09T19:47:12Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":6057,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3775695},"rest":"https://alion.io/mcp/rest/get_company?id=3775695"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flean-solutions-group-fullstack-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flean-solutions-group-fullstack-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flean-solutions-group-fullstack-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lean-solutions-group-fullstack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flean-solutions-group-fullstack-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3970433}},{"tool":"search_jobs","arguments":{"company":"leangroup.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3970433},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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