{"id":3567487,"url":"https://alion.io/job/ciklum-senior-full-stack-engineer-7","title":"Senior Full Stack Engineer","company":{"id":181259,"name":"Ciklum","domain":"ciklum.com","url":"https://alion.io/company/ciklum","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":75,"open_postings":13,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-05T05:54:30Z"}},"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":["Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":87000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"GCP","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-23T14:39:45Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-11-05T15:53:05Z","board_verified":true,"closed_at":null,"days_open":13,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":13},"description":"Ciklum is looking for a Senior Full Stack Engineer to join our team full-time in Bulgaria.\nWe are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.\nAbout the role:\nAs a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. We are a fintech company building the payments infrastructure powering global B2B commerce. As we continue to grow, we are looking for a Senior Engineer to be part of our team in Bulgaria.\nResponsibilities:\nTake involvement and ownership of all aspects of product development, from ideation through architecture to implementation, testing, and continuous deployment\nWork closely with developers, product managers, and other stakeholders to ensure smooth integration and timely delivery of features\nLead the design and implementation of RESTful APIs to enable seamless integration with various internal and external systems\nOptimize application performance to ensure low latency, high availability, and reliability\nParticipate in design and code reviews and ensure adherence to coding standards and best practices\nConduct thorough testing of backend components, write automated tests, and ensure high code quality and reliability\nIdentify and address bottlenecks, bugs, and performance issues within the backend infrastructure\nStay up-to-date with industry trends, emerging technologies, and best practices to continually improve the development process\nContribute to the overall technical strategy and architecture of the product\nDrive engineering excellence across the team, setting the standard for code quality, testing, scalability, and security\nRequirements:\n5+ years of professional experience in software development with strong expertise in Node.js, React, and TypeScript\nStrong hands-on coding skills with a passion for building scalable, reliable, and maintainable systems\nSolid understanding of software architecture, design patterns, and modern development practices (Agile, CI/CD, DevOps)\nExperience with RESTful API design and development\nStrong problem-solving skills and excellent communication abilities\nComfortable in a fast-paced, dynamic environment where priorities can shift quickly\nDesirable:\nExperience in fintech, payments, or financial services\nFamiliarity with cloud platforms such as AWS, Azure, or GCP\nExperience working with microservices or event-driven architectures\nWhat’s in it for you?\nRegular salary reviews based on performance\nCorporate events: webinars, offline parties, and meetups\nInternal Mobility Program\nTailored education path (including full access to Udemy, certifications, etc.)\n25 paid days off: 20 business days of vacation per calendar year + 5 undocumented sick leave days\nAdditional health insurance\n100% company-covered Multisport card, with discounts available for family members\nAbout us:\nAt Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.\nSince expanding to Bulgaria in 2022, we’ve been building a fast-growing team that thrives on learning, collaboration, and innovation. Join us on this exciting journey and help shape the future of our delivery center.\nExplore, empower, engineer with Ciklum!\nInterested already? We would love to get to know you! Submit your application. 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