{"id":3518717,"url":"https://alion.io/job/balkantel-senior-c-software-engineer","title":"Senior C++ Software Engineer","company":{"id":453326,"name":"Balkantel","domain":"balkantel.net","url":"https://alion.io/company/balkantel-2","size_band":"51-200","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":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sofia, Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":41000,"max_usd":78000,"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":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Linux","optional":false},{"name":"MariaDB","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"TCP/IP","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2026-10-30T09:02:14Z","employer_posted_date":null,"last_verified_at":"2026-10-30T09:02:14Z","board_verified":false,"closed_at":null,"days_open":5,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":5},"description":"Senior C++ Software Engineer\n\nBalkantel Ltd. is an engineering company specializing in R&D, manufacturing and integration of technology in critical infrastructure.\n\nWith over 30 years of engineering experience and in partnership with worldwide technology leaders, companies from the US and Europe, we have completed projects of international importance, such as:\n\n• The first national digital fiber optics network\n\n• Modernization of military and civilian airports to NATO and ICAO standards\n\n• Signalling and telecommunication systems on high-speed railway sections\n\n• Unified radio coverage of the territory of Bulgaria to ensure airspace protection\n\nToday, we continue to deliver complex engineering projects that shape the future of critical infrastructure. As our projects continue to grow in scale and complexity, so does our team. We are looking for ambitious professionals who are eager to expand their expertise, take on new challenges, and contribute to the delivery of innovative engineering solutions with real-world impact.\n\nTake the next step in your career with us.\n\nWe are looking for an experienced and motivated C++ Software Engineer to join our R&D department and contribute to the development of advanced software solutions for telecommunications and mission-critical systems. If you have strong C++ expertise, enjoy designing software architectures and solving complex technical challenges, this opportunity is for you.\n\nYour Profile\n\n5+ years of professional experience in C++ software development;\n\nStrong knowledge of object-oriented programming, design patterns and SOLID principles;\n\nExperience in developing applications for Linux/Unix environments;\n\nUnderstanding of client-server architectures and distributed systems;\n\nExperience with multithreading, synchronization, concurrency and thread safety;\n\nGood knowledge of network communication protocols, including TCP/IP and UDP;\n\nExperience with SQL databases such as PostgreSQL, MySQL or MariaDB;\n\nAnalytical thinking and problem-solving skills;\n\nGood organizational and communication skills, with the ability to work effectively in a team;\n\nWorking proficiency in English.\n\nIt Would Be an Advantage If You Have\n\nExperience in system performance analysis and optimization;\n\nFamiliarity with requirements management tools;\n\nExperience with VoIP or telecommunications systems;\n\nKnowledge of CI/CD practices and tools;\n\nExperience with Python;\n\nKnowledge of microcontrollers or hardware-software integration.\n\nWhat We Offer\n\nThe opportunity to work on sophisticated software solutions for telecommunications and mission-critical systems;\n\nInvolvement in complex software architecture and high-performance application development;\n\nThe opportunity to work alongside experienced R&D professionals;\n\nContinuous learning, professional development and technical certifications;\n\nAn environment that values technical expertise, initiative and innovation.\n\nMore Great Reasons to Join Balkantel\n\n Professional Growth\n\nWork on impactful projects in transportation, aviation, defense, and critical infrastructure.\n\nOpportunity to work with advanced technologies and cutting-edge engineering solutions.\n\nExposure to innovative technologies and international best practices.\n\nClear opportunities for professional and career development.\n\nAccess to internal and external training programs that support your continuous growth.\n\n Compensation & Benefits\n\nCompetitive salary aligned with your experience and contribution.\n\nPerformance-based financial incentives that recognize outstanding results.\n\nAttractive Employee Referral Program with bonuses for successful referrals.\n\n Health & Well-being\n\nAdditional private health insurance and annual preventive medical check-ups.\n\nMultiSport card to support an active lifestyle.\n\nComplimentary fresh fruit, coffee, and beverages in the office.\n\n Team & Culture\n\nA collaborative environment built on professionalism, mutual respect, and teamwork.\n\nSupportive colleagues who share knowledge, collaborate, and help each other succeed.\n\nCorporate events, team-building activities, and social initiatives that foster a strong sense of community.\n\nBecause we believe that the success of our projects is driven by the people behind them.\n\nIf you are looking to become part of our team and contribute to projects that make a real impact, we would love to hear from you.\n\nPlease note that only shortlisted candidates will be contacted.","description_format":"text","description_chars":4431,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Continuous learning","Health insurance","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-30T11:17:29Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring 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