{"id":149753,"title":"Software Developer PLC Programmer (m/f/d)","company":"ONEJOON GmbH","city":"Böblingen","region":"Baden-Württemberg","location":"Böblingen, Baden-Württemberg","work_model":"unknown","employment_type":"unknown","employment":["full_time"],"roles":["embedded"],"visa":"not_mentioned","relocation":"not_mentioned","posted_at":"2026-11-04T18:41:57.668028+00:00","tools":["PLC","React"],"seniority":"senior","years_experience_min":25,"german_requirement":"required","german_level":"C1","english_requirement":"required","english_level":"B1","team_language":"unknown","confidence":0.9,"method":"rules","language_badge":"German required (C1)","language_evidence":"very good German skills (C1/C2) and advanced English skills (B1/B2),","requirements_snippet":null,"url":"https://www.onejoon.de/en/jobs/software-developer-plc-programmer-m-f-d/","source":"careersite","agency":null,"description_text":"Industrial furnace construction – an industry that leaves no one cold\nHeat treatment is an important prerequisite for numerous products, e.g., carbon fibers, electric car batteries, or (razor) blades. ONEJOON develops the necessary furnace and process technology. Over 125 years of experience in industrial furnace construction, precise engineering and design work, and the spirit of a down-to-earth plant manufacturer set us apart. As a global technology leader, we are represented at 10 locations in 6 countries worldwide. The #onejoonfamily comprises almost 400 employees worldwide, 200 of whom are based at two locations in Germany, where they perform a wide range of tasks in a dynamic and future-oriented environment.\n\nSoftware Developer / PLC Programmer (m/f/d)\nAs Software Developer / PLC Programmer (m/f/d) you can expect many exciting and challenging tasks with an international context at our Bovenden or Böblingen site.\n\nWhat does that mean exactly?\n• Verifying input data for completeness and correctness, including feedback\n• Creating and further developing software modules in Siemens TIA Portal (SCL & KOP)\n• Creating and adapting WinCCUnified user interfaces\n• Implementing specifications from functional descriptions and flowcharts\n• Performing application customizing and software installations\n• Creating checklists and complete technical documentation\n• Creating checklists and complete technical documentation\n• Collaborating on virtual and real commissioning as well as FAT\n• Basic parameterization and diagnosis of converters\n• Integration and basic parameterization of thyristor controllers\n• Contributing suggestions for improvement to standards and development processes\n• Assuming module responsibility in projects\n\nWe are a good match if you\n• have a degree (bachelor's/master's) in computer engineering, mechatronics, electrical engineering, or automation technology, or a technician's degree (state-certified) in one of these fields, with relevant practical experience,\n• have at least 3 years of professional experience,\n• have advanced knowledge of the Siemens TIA Portal, WinCC Unified, and common drive technology tools, as well as\n• advanced knowledge of MS Office,\n• very good German skills (C1/C2) and advanced English skills (B1/B2),\n• are willing to travel,\n• value initiative and independent work,\n• have strong organizational skills, resilience, and a willingness to learn, be talented at improvisation and able to react flexibly to new situations, and\n• have a strong customer- and service-oriented approach to work.\n\nDownload this job posting Software Developer 08 2026\n\nAnd if you\n• have a high level of technical responsibility and commitment,\n• work in an analytical and structured manner,\n• show initiative and a solution-oriented approach,\n• are willing to learn and develop,\n• can communicate clearly and objectively,\n• are a strong communicator and team player with strong interpersonal skills,\n• can convey technical issues in an understandable way,\n• approach problem and damage analysis systematically,\n• have strong organizational and prioritization skills,\n• and naturally adhere to deadlines and quality standards,\n... then we could complement each other well.\n\nDevelopment Outlook:\nWith the appropriate experience and personal aptitude, this position offers a clear path to advancing to a technical lead role in the field of PLC software. In this role, the employee will be responsible for designing software architecture, establishing standards, and conducting reviews; supporting the onboarding of new developers; and gradually assuming responsibility for the technical quality of our automation software.\n\nThis is what you can look forward to:\n• Teamwork and mutual support (Teamwork makes the dream work!)\n• Targeted qualification measures and promotion of professional development\n• Family-friendly thanks to various working time models and mobile work\n• Capital-forming benefits\n• Company pension scheme\n• Company health management\n• Other benefits: free parking spaces, height-adjustable desks, canteen, meal allowance, free coffee, tea and water (fresh fruit is also available), bike leasing, ONEJOON employee discounts\n\nCurious?\nOur job offer Software Developer / PLC Programmer (m/f/d) sounds promising? Then we look forward to receiving your application.\nDo you have any initial questions for us or about the job?\nPlease contact Bjoern Fabig | Senior Human Resources Officer (Tel. [entfernt]) or by e-mail to: [entfernt]\nLocation: Bovenden or Böblingen\n\nWe value diversity!\n\nWe therefore welcome applications from everyone – regardless of gender, nationality, ethical and social background, religion and ideology, disability, age and sexual identity. For reasons of better readability, we use the masculine form when referring to persons and nouns in our job advertisements. In the interests of equal treatment, however, these generally apply to all genders and this form of language is used solely for editorial reasons. Qualified persons of all genders are therefore expressly invited to apply.\n\nApply now in just a few seconds\nPlease fill in the information below. We will get in touch with you as soon as possible!\n\nAbout us\nONEJOON\nas employer\nread more\nProfessionals and Executives\nBecome part of\nour team\nread more\nJob offers\nFind the job that fits\nto you!\nread more\n\nWe celebrate our anniversary!125 years of expertise in industrial furnace construction\nread more","responsibilities_text":null,"requirements_text":null,"status":"open","duplicate_of":null,"first_seen":"2026-11-04T18:41:57.668028+00:00","responsibilities_summary":null,"requirements_summary":null,"all_tools":["PLC","React"],"posting_language":"en","evidence":[{"language":"german","requirement":"required","quote":"very good German skills (C1/C2) and advanced English skills (B1/B2),","source":"rules"},{"language":"english","requirement":"required","quote":"very good German skills (C1/C2) and advanced English skills (B1/B2),","source":"rules"}],"years_experience_max":null,"mobility_evidence":[],"model_version":"rules-8","english_badge":"English required (B1)","company_id":20294}