{"id":2484884,"url":"https://alion.io/job/lean-solutions-group-where-talent-meets-technology-senior-backend-developer","title":"Senior Backend 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":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":76000,"max_usd":223000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6933},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EC2","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Amazon EKS","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Docker","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Linux","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-10-14T00:02:50Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-20T02:23:26Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Description\nCompany Overview: \nGlobal Technology Services 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, Philippines and the United States, contributing to cutting-edge developments in multiple industries.\nPosition Title:Senior Backend Developer\nLocation:LATAM\nWhat you will be doing:\nThe ideal candidate has deep JVM expertise, strong proficiency in Kotlin or Java, and recent hands-on experience with Spring Boot. This role requires someone who can design, build, troubleshoot, and operate distributed, integration-heavy systems in complex customer-controlled cloud environments.\nBeyond traditional backend engineering, this position expects strong proficiency with AI-assisted software development, including daily use of Claude Code and AI-powered code-review tools. The successful candidate will be able to move quickly with AI while maintaining high engineering standards and independently validating AI-generated code for correctness, security, maintainability, test coverage, and architectural fit.\nRequired Skills & Experience\n8+ years of professional backend software development, including substantial ownership of production systems.\n\nBachelor's degree in Computer Science or a related field, or equivalent practical\n\nexperience.\nDeep JVM experience and strong proficiency with Kotlin or Java (preferred); recent hands-on Spring Boot experience is required.\n\nDemonstrated ability to design, implement, and troubleshoot distributed, integration-heavy systems.\n\nStrong PostgreSQL and SQL skills, including schema design, query analysis, migrations, and production data investigation.\n\nExperience building REST APIs and asynchronous, event-driven, or batch-processing workflows.\n\nExperience with Docker and image creation.\n\nHands-on Linux and container experience; ability to work effectively with platform\n\nengineers in customer-controlled cloud environments.\nProficiency with the following AWS services is highly preferred: ECS or EKS, MemoryDB, RDS (Postgres), EC2, Workspace, ELB, API GW, ECR, Glue.\n\nStrong automated-testing discipline and practical experience with CI/CD and production\n\nrelease processes.\nDaily fluency with AI coding assistants, specifically Claude Code, and comfort working\n\nwith AI-assisted code-review tools.\nAbility to validate AI-generated code for correctness, security, maintainability, test\n\ncoverage, and fit with the surrounding architecture before it is accepted.\nTrack record of independently driving ambiguous work to a verified outcome.\n\nSoft Skills\nStrong problem-solving and debugging skills.\n\nClear written and verbal communication in a remote, cross-functional environment.\n\nAbility to work independently and take ownership of projects.\n\nStrong communication skills with the ability to articulate, diagram and document complex engineering concepts.\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. GTS is an equal opportunity employer. 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