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As a Senior Ruby on Rails Developer, you will play a key role in building, maintaining, and evolving highly scalable applications, APIs, and backend services while collaborating closely with Product and Design teams to deliver exceptional customer experiences.This is a hands-on engineering role where you'll contribute across the full software development lifecycle, from architecture and development to deployment and performance optimisation. You'll work on complex systems that demand reliability, scalability, and innovation, while helping shape engineering standards and mentoring fellow developers.\nIf you enjoy solving challenging technical problems, influencing product direction, and working with modern technologies in a collaborative environment, this opportunity is for you.\nKey Responsibilities:\nDesign, develop, and maintain scalable Ruby on Rails applications\nLead complex technical initiatives from planning through to deployment\nCollaborate closely with Product and Design teams to build customer-focused solutions\nDevelop and maintain REST and GraphQL APIs and integrations\nImprove system performance, reliability, and scalability\nOptimise data models and database performance for high-volume transactional systems\nBuild clean, maintainable, and well-tested code\nContribute to deployment pipelines, infrastructure, and developer tooling\nSupport production environments through troubleshooting and root cause analysis\nMentor developers and contribute to engineering best practices\nEvaluate and implement AI-assisted development workflows where appropriate\nJob Experience and Skills Required:Education: Relevant Degree in Computer Science, Software Engineering, Information Technology, or a related field advantageous\nExperience:\nMinimum 6 years' professional software development experience\nExtensive hands-on experience with Ruby on Rails in production environments\nExperience building large-scale, customer-facing applications\nExperience mentoring and supporting other software engineers\nTechnical Skills:\nRuby\nRuby on Rails\nREST APIs\nGraphQL\nPostgreSQL\nRedis\nSidekiq or equivalent background job processing tools\nModern JavaScript and TypeScript\nAutomated testing frameworks\nCI/CD pipelines\nCloud-hosted application development\nInfrastructure & Cloud:\nAWS\nDocker\nGitHub Actions\nCircleCI\nAdvantageous:\nAI-powered product development\nLLM APIs and AI tooling\nWorkflow automation\nTerraform\nPerformance profiling and optimisation\nPayments, fintech, or high-volume transactional systems experience\nAdditional Requirements:\nStrong product mindset and customer-focused thinking\nExcellent communication and collaboration skills\nStrong understanding of software architecture and domain modelling\nPassion for continuous improvement and technical excellence\nAbility to work independently and take ownership of key product areas\nApply now!For more exciting IT vacancies, please visit:\nhttps://www.networkrecruitmentinternational.com/\nI also specialise in recruiting in the following:\nData Engineer\nSoftware Developer\nData Analyst\nInfrastructure\nArchitecture …and more!\nIf you have not had any response in two weeks, please consider the vacancy application unsuccessful. Your profile will be kept on our database for any other suitable roles / positions.For more information, contact:\nKarmishka Naidoo\nSpecialist Recruitment Consultant\nConnect with me on LinkedIn!\nhttps://za.linkedin.com/in/karmishka-naidoo-088772290","description_format":"text","description_chars":3575,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Recruiting & Staffing","Executive Search"],"lifecycle":[{"event":"open","at":"2026-10-20T19:52:49Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.628,"p_room":1,"age_days":1,"expected_fill_days":7,"reasons":["seen:1","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/network-finance-ruby-on-rails-developer","json_url":"https://alion.io/job/network-finance-ruby-on-rails-developer.json","meta":{"generated_at":"2026-10-23T02:27:08Z","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":4034,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"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":3827505},"rest":"https://alion.io/mcp/rest/get_company?id=3827505"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fnetwork-finance-ruby-on-rails-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"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%2Fnetwork-finance-ruby-on-rails-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"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%2Fnetwork-finance-ruby-on-rails-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/network-finance-ruby-on-rails-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnetwork-finance-ruby-on-rails-developer"}]}