{"id":2267860,"url":"https://alion.io/job/cross-source-senior-back-end-engineer","title":"Senior back-end engineer","company":{"id":4402845,"name":"Cross Source","domain":"crosssource.eu","url":"https://alion.io/company/cross-source","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"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":"inferred","locations":["Sofia, Bulgaria"],"countries":["BG"],"hiring_countries":["BG"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":36000,"max_usd":103000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6328},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":true},{"name":"C#","optional":true},{"name":"Git","optional":true},{"name":"Java","optional":true},{"name":"Kotlin","optional":true},{"name":"Kubernetes","optional":true},{"name":"PostgreSQL","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Redis","optional":true},{"name":"Scala","optional":true}],"status":"live","first_seen_at":"2026-10-07T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-07T00:00:00Z","board_verified":false,"closed_at":null,"days_open":5,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":5},"description":"Senior Back-end Engineer – обява в Rabota.bg от Cross Source |\n Investor|\n Dnes|\n Bulgaria On Air|\n Gol|\n Tialoto|\n Az-jenata|\n Puls|\n Teenproblem|\n Automedia|\n Imoti.net|\n Rabota|\n Az-deteto|\n Blog|\n Start|\n Chernomore\n\n DnesInvestorGolAutomediaTialotoAz-jenataAz-detetoTeenproblemPulsImoti.netRabotaStartBlogAhaSnimka Публикуване на обява \n Цени и услуги\n За нас\n Вход | Регистрация \n\n Начало\nОбяви за работа\n Стажове\n Работодатели \n Кандидати\n Обучениe\n\n Новини\nСъбитие\n Бежански\nстатут\n Работодатели ЧЕЗ България ЕАДА1 България ЕАДАйкарт АДЛуфтханза Техник СофияGi GroupCONCENTRIX SERVICES BULGARIA ЕООDГфК България ЕООД \n\n Агенции Менпауър България ООДЕйч Ар Ес Рикрутмънт Сървисиз ООДHorizons BulgariaAdecco Bulgaria Ltd \n\n Обява обратно към списъка \n Senior Back-end Engineer Описание Who Are We?\n\n We are a small Crypto / Fintech startup, backed by one of the largest international investors in the space, aiming to solve some of the biggest open problems in the current crypto field. Our niche is very specific, without direct competition and we are hungry to make our impact. The business is built and backed by people with a great track record in the space and we are looking for partners to join us on the journey.\n\n About The Role:\n\n We are looking for a Senior Back-end Engineer (or a prospective Mid), with experience in building reliable/scalable backend systems. Тhe engineering team is still very compact and we are looking for someone who can own a significant portion of the technical solution.\n\n What we value in candidates:\n\n Builder & doer mentality - people who simply love to create things\n Hunger for knowledge and growth - we expect that our business will have a diverse set of challenges and responsibilities that will be available for people who are hungry to step up\n Owner mentality - we desire to be surrounded by people who have the urge to own different parts of the business or tech solution.\n\n What will working with us look like?\n\n Live through the romantic part and craziness of starting a great new product\n Dynamic environment, direct impact on the product and decision processes\n Hackathon retreats, family-like team, the opposite of corporate culture\n Challenging technical problems, the opportunity for the delivery of first of a kind solutions\n Overall, an experience that is just different\n\n So, what will your day at work look like if you join us?\n\n Participate in our daily agile process\n Discuss with the business/product owners on important architectural decisions\n Work on shipping high-quality code\n Partnering with the UX/UI & product team to create prototypes that allow us to test what is the best user experience that we can deliver to the end-users\n Constantly learn new things (especially about crypto!)\n\n What technical capabilities are we looking for?\n\n Experience in building high quality, reliable and scalable backend systems\n We believe good engineers can switch languages fairly quickly, so experience in any of the following is a plus: Java, Kotlin, C#, Scala\n Experience or good understanding of technologies like Kafka, RabbitMQ, Kubernetes, etc.\n Experience with any of the following storage solutions: Redis, NoSQL databases, PostgreSQL, HDFS, Spark\n Experience with TDD and Unit Testing\n Source control (Git / TFS)\n Appreciation of UI/UX\n A pragmatic and level-headed approach to all aspects of your responsibilities\n What can you expect from the working environment?\n\n Expertise – Your colleagues are experts in their field – you can expect their work to be of high quality. The team will expect the same from you.\n Opportunities – You will be working on services/applications that you and your team can call your own.\n Flexible Working Hours – Flexible working hours, as long as the work process remains efficient.\n Remote Work – We offer a mixed model, that allows you to work from anywhere you like for two weeks a month.\n Make A Difference – You will have the power to be an individual, not just a resource. Your voice will be heard on all matters.\n Social Activities – Achievement celebrations, team retreats, team buildings, board games, happy hours, outdoor activities\n Talent Development – For developing your talent we offer various training – PluralSight, Udacity, etc.\n Wellbeing – We offer additional health insurance and MultiSport Cards\n Compensation Packages – Last but not least, we offer a highly competitive compensation package.\n Изисквания към кандидата Образование: , Профил: \nЕзикови познания: \n Трудов опит: \n Ние предлагаме \n Категория: ИТ и Компютърни специалисти Държава: България Дата: 7.Октомври.2026 Организация: Cross Source Организация: Фирма/Организация Директно търсеща служители Детайли за организацията: Повече информация за Cross Source може да получите ТУК Внимание: Некоректни потребители публикуват обяви на импулсни телефони започващи с 0481, 0871, 0881, 0890, 0891, 0900. \n\n Кандидатствай Оферти от категорията Специалист съпътстващи операци Помощник готвач във ведомстве Microsoft dynamics 365 crm sof Оператор на лазерна машина Senior mechanical design engin \n\n Оферти от работодателя Специалист съпътстващи операци Организатор, обработка на прои Инженер производство и изпитва Инженер анализ на отказите и а Специалист трз и административ \n На работа с Сайтът предлага лесен и бърз достъп до близо 291 887 автобиографии и 45 643 работодатели. Чрез по-добрите менюта за работа, както и с повечето функции, които предлага, Rabota.bg доближава Работодатели и Кандидати като улеснява връзката между тях. \n\n Условия за ползване Цени и Услуги Помощна\nинформация Обяви за работа по RSS \n Начало\n Обяви за работа\n Кандидати\n Работодатели\n Обучение\n Помощна информация\n Имената на бизнеса\n Цени и услуги\n Условия за ползване\n Лични данни\n Контакти\n Реклама\n Портфолио\n Кариери\n Към мобилната версия\n Обяви за работа по RSS Инвестор.БГ АД © 2001-2015 Rabota.bg Всички права запазени.\n Investor.BG AD © 2001-2015 Rabota.bg All rights reserved.","description_format":"text","description_chars":5947,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Health insurance"],"hiring_locations":[{"name":"Bulgaria","iso":"BG","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto"],"lifecycle":[{"event":"open","at":"2026-10-11T06:55:15Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.857,"p_room":1,"age_days":5,"expected_fill_days":28,"reasons":["seen:5","win:early"],"computed_at":"2026-10-12T01:31:04Z"},"pay":null,"html_url":"https://alion.io/job/cross-source-senior-back-end-engineer","json_url":"https://alion.io/job/cross-source-senior-back-end-engineer.json","meta":{"generated_at":"2026-10-12T01:31:04Z","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":1786,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":4402845},"rest":"https://alion.io/mcp/rest/get_company?id=4402845"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcross-source-senior-back-end-engineer"},{"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%2Fcross-source-senior-back-end-engineer"},{"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%2Fcross-source-senior-back-end-engineer"},{"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/cross-source-senior-back-end-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcross-source-senior-back-end-engineer"}]}