{"id":834274,"url":"https://alion.io/job/goods-senior-backend-engineer-platform-modernization-integration","title":"Senior Backend Engineer – Platform Modernization & Integration","company":{"id":673473,"name":"Goods & Services","domain":"goods.com","url":"https://alion.io/company/goods-3","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mexico"],"countries":["MX"],"hiring_countries":["MX"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":159000,"period":"year","method":"role_seniority_country_cell","sample_n":10},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Amazon EventBridge","optional":false},{"name":"Amazon S3","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Step Functions","optional":false},{"name":"IAM","optional":false},{"name":"JavaScript","optional":false}],"status":"live","first_seen_at":"2026-08-26T15:31:26Z","employer_posted_date":"2026-09-01","last_verified_at":"2026-10-12T08:39:13Z","board_verified":true,"closed_at":null,"days_open":46,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":46},"description":"About Goods & Services\n\nGoods & Services is a product design and engineering company. \nWe solve mission-critical challenges for some of the world’s largest enterprises, with deep expertise in highly regulated industries-including life sciences and financial services. Our design-led approach allows us to apply cutting-edge capabilities in AI, Data and Hardware Engineering to companies of any size. \nHeadquartered in the United States, we operate regional development centers in Mexico and the United Kingdom. This global footprint-anchored by our nearshore model-enables us to deliver at scale with the speed, efficiency, and cultural alignment our clients expect.\nAt Goods and Services, we value diversity and are committed to creating an inclusive workplace where everyone can thrive. We are proud to be an Equal Opportunity Employer and welcome qualified applicants from all backgrounds.\nAbout the job\n\nGoods & Services is looking for a Senior Backend Engineer - Platform Modernization & Integration to help strengthen and evolve the platform’s core services, with a focus on improving security, modernizing legacy components, and developing scalable backend solutions. The role will contribute to key platform initiatives, service optimization, workflow orchestration, and the development of new core capabilities.\nWhat you’ll do:\nDesign and implement secure API gateway capabilities, including authentication, authorization, token validation, access controls, rate limiting, monitoring, and caching.\nConsolidate and modernize backend services and APIs to create unified, scalable, and maintainable service interfaces.\nDecompose legacy monolithic components into modular services and implement event-driven integrations to improve scalability, flexibility, and maintainability.\nDesign and implement workflow orchestration solutions to automate complex business processes, service interactions, and scheduled activities.\nDevelop core platform services, APIs, integrations, and reusable components that support new business capabilities and partner-facing solutions.\nSupport performance testing, traffic-ramp validation, and production migration activities while safely retiring legacy code paths once replacement services are fully validated.\nWhat you’ll need:\nStrong backend engineering experience with hands-on expertise in RESTful API development, API Gateway, IAM, authentication, authorization, and cloud security.\nHands-on experience with AWS cloud services, particularly API Gateway, IAM, S3, EventBridge, and Step Functions.\nExperience designing and implementing event-driven architectures, including AWS EventBridge, event schema design, asynchronous communication, and service integration.\nProven experience modernizing and decomposing legacy monolithic applications, using feature flags, incremental migration strategies, and event-driven integration.\nHands-on experience with AWS Step Functions, including state-machine design, workflow orchestration, and asynchronous task-token callbacks.\nExperience designing OAuth2-secured APIs and partner integrations, including multi-tenant configurations and API/SDK development.\nExperience with third-party service and external system integrations, including APIs, document platforms, authentication providers, and partner services.\nExperience conducting performance and load testing to validate backend services, APIs, and cloud-based workloads.\nExperience with observability and production monitoring, including distributed tracing, logging, metrics, and troubleshooting of distributed applications.\nExperience supporting production migrations and traffic transitions, including traffic validation, feature flags, and safe retirement of legacy components.\nStrong JavaScript/SDK development skills and ability to contribute to API and partner-facing platform capabilities.\nComfortable working in an Agile environment with two-week sprint cycles, collaborating effectively within a cross-functional engineering 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