DEVOPS ENGINEER WITH DB FOCUS

requirements of cost-optimized airline operations, trajectory-based operations and reduction of emissions. Our research takes place in a corporate climate that promotes innovation, continuous search for excellence and ensures we have fun in what we are doing. Our focus is on affordable, user-friendly systems that provide the ultimate level of cost optimization and integrate seamlessly into future airline operations and ATM systems. FLIGHTKEYS 5D - as the only 21st century flight management system - will balance airline network throughput, greenhouse gas emissions and safety in the most cost-efficient way and covers a scope far beyond any solution currently available on the market. By improving communication and collaboration amongst stakeholders in the aviation industry it will lead to a smarter and more productive use of aircraft and airspace. Our vision is now swiftly taking shape in an unprecedented clean-sheet development approach with a fast-growing team of top software developers and aviation experts. So watch us closely, or feel free to invite us to present our new 5D solution." ~100 Customers ~10000 Aircraft Operating 5D 60 NEXT CUTOVER 320000 Software Builds A SOLUTION THAT CONSIDERS EVERY LITTLE THING. Having developed flight planning systems for more than 30 years, the FLIGHTKEYS team has what it needs to tackle all challenges of current trajectory management, in-flight watch and the complex

requirements on flight planning systems. We believe that features like fully automated cost driven route optimization, correct application of the cost index concept, management by exception, fuel tankering, EDTO, Terrain avoidance scenarios, precise enroute charges computation, tailored NOTAM and weather briefings, consideration of weather hazards, and more are basic features and do not have to be explained in detail. FLIGHTKEYS 5D is extending these standard features with probabilistic (the 5fth) dimensions, environmental sustainability functions and enhanced in-flight trajectory management and drives basic capabilities even further. 5D Multiverse (Probabilistic Dimension) Multi-Dimensional All-In-One Trajectory Generator Full Flight Dynamics Alert-Resolution Driven Network and Traffic Awareness Web-based, Cloud and Mobile Tight ATM System Integration Dynamic Airport Suitability Checking In-Flight Trajectory Management 5D Analytics Module Flight Lifecycle Traceability Advanced APM integration FF-ICE R1 and FIXM 4.3 Ready Flexible Planning And Fuel Policy SHOW ADVANCED FEATURES HIDE 5D Multiverse (Probabilistic Dimension) In addition to the 4D space covered by traditional flight planning solutions, 5D extends the calculation space into a 5th dimension. Uncertainties in surface weather, traffic and cost prediction are modelled into statistical functions based on a continuous analysis of actual flight data. For upper air weather, multicasting weather products are introduced to compare multiple scenarios and automatically apply suitable strategies, e.g. adaptive fuel reserves and delay cost reduction. Multi-Dimensional All-In-One Trajectory Generator All-in-one trajectory optimizing is the holy grail of flight management systems and was considered unachievable when the currently existing systems were developed 20 years ago. Therefore, traditional systems optimized in 2 steps: First, a lateral route was created with rudimentary aircraft performance data to consider upper air weather, overflight cost and airspace constraints. Second, vertical and speed optimization was applied on this pre-defined route. As the only 21st century flight management system, our multi-dimensional all-in-one optimizer creates the trajectory in full resolution from gate to gate (utilizing all available runways) with dynamic aircraft performance data, precise overflight fee formulas and probabilistic cost functions in a single pass, thus avoiding any issues of vertically unflyable routes, inaccurate overflight cost and on the other hand provides significantly improved optimization accuracy at the same time. By applying newest technology and advance algorithms, we can achieve a significant calculation speed improvement that enables repeated, automated optimization runs whenever triggered by external conditions. Full Flight Dynamics In the near future, 5D will be based on a completely new paradigm - it will simulate the trajectory and calculate required data from original airplane and engine characteristics wherever possible. Those characteristics are laid down in high and low speed lift/drag polars, thrust/altitude characteristics, thrust/fuel behaviour and many more. 5D performance engineering tools already allow to extract basic characteristics of an aircraft from manufacturer’s data in an elaborate way and these data can be further refined through our advanced APM (aircraft performance monitoring). With these data and the associated complex algorithms, 5D will become extremely flexible and accurate in all performance calculations. As a first step, climb and descent calculations are based on a hybrid table/1st principle method that already provides much more flexibility in automatically selecting optimum profiles and considering acceleration/deceleration segments. The following features will only be possible with our 5D flight dynamics based system: Consideration of geopotential gradients (cruise at constant pressure altitude actually means climbing into high pressure areas and descending into low pressure) Precisely optimized climb and continuous descent profiles with accurate airport elevation consideration Elimination of speed optimization artefacts from low-res manufacturer data Accurate consideration of vertical wind components and wind shears Consideration of geopotential gradients (cruise at constant pressure altitude actually means climbing into high pressure areas and descending into low pressure) Consideration of geopotential gradients for terrain clearance and drift-down Consideration of pressurized cabin air weight (example: an A330 can effectively weigh an additional 700kg at cruise altitude) Consideration of inertial forces (gravity changes with altitude and latitude, coriolis force, centrifugal force) Consideration of distance increase at higher altitude Consideration of climb gradients in turning flight Accurate altitude capability based on CG and fuel distribution prediction Integrated fuel tank temperature predictions Adaptive buffet margins for improved turbulence management Cruise climb calculations (continuous climb during cruise phase at climb thrust) Non-standard descent calculations, considering cabin pressurization schedules and speed brake or flaps usage) Flexible bleed settings (anti-ice, non-standard aircondition settings) Effect of humidity on fuel consumption Holding calculations in non-clean configurations, depending on speed constraints Engine-out and gear down calculations in any combination and for any flight phase Refined and fully automated aircraft performance monitoring Mixed engine operations Evaluation of new airframe-engine combinations Integrated landing performance calculations for airport suitability checks Large-scale comparison simulations for different optimization strategies (e.g. versus FMS speeds and profiles) Planning of supersonic and hypersonic vehicles, including orbital dynamics up to LEO Distill performance data out of large sets of real flight data from DARs Reliable terrain-limited climb-out profiles for PBN evaluations Support test flight evaluations Develop and evaluate more efficient flight profiles Provide EFB applications to assist more efficient flight profiles Improve / design the next generation FMS Alert-Resolution Driven Alerts and warnings are an important method to inform the user on potential issues associated with the planning. There are both internal and external events and status changes that can result in an alert. The severity or applicability of such an alert highly depends on the type of operation and the workflow in dispatch and collaboration with the cockpit. Also a lot of the reasons for alerts could be self corrected automatically or semi automatically. We designed a 3 layer event / status processing and configuration system that will allow free configuration which events in conjunction with which statuses will result in an automatic action and / or alert and warning. Based on the setting the system can provide a very concise set of necessary alerts and wherever possible already suggest a “one click acceptance solution” to keep the workload of the dispatcher as low as possible. Automatic solution of issues and direct alerting of the cockpit can be driven within the same set of settings. Network and Traffic Awareness Future 5D ehancements will allow to view flights not as singular entities anymore, but as participants in the full traffic picture, with tools to ensure passenger, load, crew and aircraft connectivity, as well as trajectory optimization around potential traffic conflicts. In-flight monitoring alerts for potential encounters and in-flight re-optimization allows to resolve conflicts in real-time, with increasing strictness applied as an encounter gets closer in time. This advanced concept will shift the handling of traffic flow management from ANSPs to airline operations centres. Web-based, Cloud and Mobile 5D is built on a state of the art container architecture where monolithic components are avoided as far as possible. This enables the system to run in any cloud or cloud-like infrastructure, either hosted by FLIGHTKEYS or hosted by the customer. Due to this distributed architecture, the server infrastructure

requirements are much lower compared to other trajectory or flight management systems on the market. 5D furthermore has a fully web-based user front end that can be accessed from any computer, tablet or even smart phone. Tight ATM System Integration 5D bridges the traditional gap between ATM flight data processing and airline operations management to the point where 5D creates pre-deconflicted and cost-optimized trajectories. It will be the only system that fully supports enroute CDM, enroute UDPP and DARP. While ATM is focused on local processing and sector load balancing, airlines are operating globally and need to have the full picture, including all other traffic potentially affecting their flights. Enroute CDM automates the communication process for rerouting airborne flights and allows to negotiate route proposals with ANSPS and upload approved trajectory revisions to the aircraft. Due to the high level of automation, both controller and dispatcher workload is reduced. Dynamic Airport Suitability Checking Real-time airport suitability monitors availability of airports, runway, terminal procedures and approaches runways from the pre-planning phase to landing. This includes active NOTAM and weather monitoring. Dynamic planning minima (ex. Alternate or ETOPS minima) are derived from available runways and approaches at the planned arrival time, using user configurable rules. 5D Analytics Module 5D Analytics is an advanced flight planning projection tool powered by the FLIGHTKEYS 5D engine. The tool is designed to provide high quality flight data prediction for analysis of new routes. The route analysis uses historical deterministic upper air data. In addition to the flight data (time, payload, cost, etc…) the result enables the user the location of the most probable optimum route, which highlights potential overflight permission

requirements. Analytics 5D produces both PDF reports (via Web-UI or email) as well as XML reports for the integration into an airline's commercial planning system. In-Flight Trajectory Management With 5D, in-flight trajectory management goes far beyond current flight-watch or flight-following. The optimization process seamlessly continues from several days before departure throughout the actual flight from leaving the gate until landing. Once an aircraft leaves the gate, the stakes are set. The aircrafts gross mass is fixed for the first time since starting planning that flight, the fuel on board is known and once the gear is up, 5D already has recalculated and re-optimized the trajectory of that flight and continuous to do so until landing. Given the unique full flight dynamics used by 5D that alone continuously saves cost. Flight Lifecycle Traceability Every flight gets calculated and optimized multiple times - from weeks before the actual flight to actual landing and then post-flight evaluation. Long-term planning, scheduling - weeks before departure (utilizing a 16 day GRIB upper air data forecast) Pre-flight planning, hotspot detection, trajectory filing - from days to a few minutes before departure In-flight re-optimization, conflict resolution, weather avoidance Post-flight evaluation - as soon as actual trajectory data is available During the entire lifecycle of a flight, a vast amount of events take place that may change the status or the parameter of a flight. These events may be triggered by 5D components, other systems, user interaction or data coming from the aircraft. 5D’s revision and event traceability concept ensures that all these events and changes are traced, stored and available at any time. Advanced APM Integration Precise Aircraft Performance Monitoring is a cornerstone for accurate and efficient flight planning and safe reduction of contingency fuel. To get the highest benefit from 5D ‘s advanced aircraft performance algorithms, 5D will integrate advanced APM from QAR-based APM providers like Storkjet. As one of many additional

benefits, advanced APM reduces scatter and provides more meaningful results. 5D APM integration will be based on high-resolution QAR data, which combined with full flights dynamics creates useful results even for flight segments that do not fulfil stabilization

requirements, thus increasing the size of useful samples significantly. FIXM 4.0 Ready FIXM (in support of ICAO FF-ICE) will bring 5D’s global trajectory management capabilities into a globally interoperable state. Apart from the evolution of the 4D trajectory (as it exists in the Extended Flight Plan) an integral part of FIXM will be the GUFI (Globally Unique Flight Identifier) which is issued for each planned flight. 5D’s flight identification architecture fully integrates this concept and opens the door for a global flight plan filing and validation system. Flight Data Processing Systems, as used within Air Traffic Control Units can easily integrate 5D’s trajectory generation, monitoring and revision engines via this global standard. Flexible Planning And Fuel Policy 5D brings an integrated dynamic policy editor and evaluation engine which puts an end to hardcoded planning policies that are time-consuming and costly to change. Fuel, planning or alternate selection policies and more can be easily defined and changed just in time. Together with the scripted business rules this creates an unprecedented level of flexibility. THE BEST TEAM CAN EVEN GET BETTER. We are continuously building up a creative and motivated team of developers, testers, engineers and system experts and if you would like to participate in creating, supporting and delivering solutions for mission critical systems and work for customers around the world, we would be excited to hear from you. DEVOPS ENGINEER WITH DB FOCUS What you bring: Strong experience in setting up and maintaining relational database systems (at best on PostgreSQL) Interest in setting up and maintaining complex, 24/7 mission-critical software Talent for troubleshooting and debugging Willingness to act as a third-level support engineer in crises Solid general IT skills and willingness to learn new technologies Good knowledge of common Linux distributions Good command of English (spoken and written) You are passionate about problem-solving and continuous improvement High-quality awareness, innovative and independent working style A work permit for Austria or any other country within the European Union is a requirement

Nice to have: Programming skills and/or Experience with microservice architectures (Docker/Kubernetes) Experience with Amazon AWS cloud deployment or similar commercial cloud vendor Interested in aviation What's in for you: A warm, collaborative, and inclusive team culture and State-of-the-art infrastructure Working in an international team Superb infrastructure Continuous learning and personal development opportunities Competitive salary: €65,000 – €80,000 annually (depending on experience) Contract type: Permanent full-time position based in Vienna Numerous

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benefits to support focused, effective work --> --> SUBJECT MATTER EXPERT --> What you bring: --> --> Detailed understanding of regulatory and airline-specific procedures in Flight Operations incl. the ability to master the language/terms/jargon in the area of expertise --> Ability to explain complex matters in an appropriate language suitable to the target group (from an end-user to a software developer) --> Personality to drive change management and consult customers on complex business process changes and improvements --> Good general technological understanding and interest in building up the required know-how of IT. --> Talent for troubleshooting and debugging --> Outgoing personality who enjoys being a “go-to person” internally and for customers --> Good command of English (spoken and written) --> High-quality awareness, innovative and independent working style -->

Nice to have: Dispatch Licence (active or expired) -->

Nice to have: Basic knowledge of SQL, XSLT, and/or LUA --> --> Primary

Responsibilities: --> --> Participate in the upkeep of the solution, including onsite visits at the customer's premises --> Actively own and execute work orders to set up or change system configurations for live customers --> Validate and formulate

requirements --> Provide input for the design and construction of the solution, test cases, and scenarios, and may also validate executed test results --> Provide input into (Technical Authors) and/or create and execute user documentation and training material --> Test the products or services (user acceptance testing) using and evaluating them for accuracy and usability, providing feedback to the project team --> Update OFP layouts --> Assist the DevOps and NavServices team in answering and resolving customer support requests --> Provide onsite customer support during and after go-lives, health checks, and business reviews --> --> What we offer: --> --> A warm, collaborative, and inclusive team culture and State-of-the-art infrastructure --> Working in an international team --> Superb office and work infrastructure --> Working in a global environment for global customers --> Opportunity to travel to customers around the world --> Continuous learning and personal development opportunities --> minimum salary: €60,000 annually (Salary negotiable based on experience) --> Contract type: Permanent full-time position based in Vienna --> Numerous

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benefits to support focused, effective work --> --> --> --> SENIOR SOFTWARE ENGINEER Primary

responsibilities: Design and implement features end to end across our Java/Spring Boot backend Break down

requirements into well-scoped technical plans Make sound design decisions, weighing maintainability, performance, and timelines Own components or services from design through rollout Contribute actively to code reviews, raising the quality bar across

the team Help uphold and apply our engineering standards and development practices Mentor and support less experienced developers through pairing and guidance Act as technical escalation for the support team What you bring: 5+ years of professional software development experience Strong Java backend development with Spring Boot Good understanding of relational databases, ideally PostgreSQL (schema design, query optimization) Working knowledge of Angular (components, services, RxJS, state management) Passion for clean, maintainable code and long-term quality

Nice to have: Containerization (Docker) and CI/CD pipelines API integration experience (consuming or designing external interfaces) Familiarity with Agile/Kanban team structures Prior experience participating in code reviews Interest in/or experience with AI-assisted development tooling, Cyber Security, and/or GeoServer What's in for you: A warm, collaborative, and inclusive team culture and state-of-the-art infrastructure Working in an international team Superb office and work infrastructure Working in a global environment for global customers Continuous learning and personal development opportunities Full-time, permanent position (38.5 hours/week), based in Vienna Salary: €65,000 – €75,000 annually Numerous

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benefits to support focused, effective work --> --> YOU ARE INTERESTED? --> We are always looking for talented people who are: --> --> team players --> passionate about aviation and technology --> like to learn from each other --> love what they do --> --> --> --> PEOPLE & CULTURE OPS SUPPORT Primary

responsibilities: Support, improve, and own processes across the employee lifecycle, and run them like a system Manage administrative workflows, People Ops systems, and employee data Keep recruitment moving Drive process optimization and scalability Support and coordinate end-to-end recruitment Ensure reliable, compliant, and efficient HR operations Occasionally: Support applications for residence permits & assist with relocations What you bring: Vocational education relevant to

the role, a comparable qualification, or a university degree at bachelor’s level with a focus on Human Resources, Personnel Management First HR / People Ops / recruiting experience First experience in HR, recruitment, or People Operations Fix, streamline, and scale workflows Very good knowledge of MS Office You are comfortable with detailed, routine administrative work and understand its importance for a well-functioning HR setup Strong organizational and administrative skills Structured, detail-oriented, and proactive mindset Basic knowledge of Austrian labour and social insurance law Fluent in English and German

Nice to have: Understanding of payroll basics Experience with HRIS Solutions (e.g. REXX Systems) Interest in digital tools and process improvements What’s in for you: The opportunity to play an active part in shaping, developing, and optimizing the ‘People & Culture’ operations during its early stages International team (130+ people, 40+ nationalities) Continuous learning and development opportunities Learning and development opportunities Full-time (38.5h) or part-time (at least 25h) Starting salary from €45,000 gross annually (willingness to pay more) Vienna-based Overtime = time off Numerous

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benefits supporting focused and effective work --> --> Aircraft Trajectory Optimization Engineer --> The

requirements are: --> --> Passion for algorithms and (optimization) problem solving --> Flair for high quality software and clean code --> Develop innovative solutions for high complexity transportation problems --> Investigate and troubleshoot in an operational environment --> Experience in working with modern C++ -->

Nice to have: Aviation Know-How --> --> What we offer: --> --> Warm and friendly work environment --> Superb infrastructure --> Working in a global environment for global customers --> Opportunity to travel to customers around the world --> Opportunity to grow with us and expand your skillset --> High degree of flexibility --> Salary: 50,000-75,000 EUR yearly gross, depending on experience --> Contract Type: Full-time / permanent position --> Location: Vienna, Austria --> --> --> --> --> --> YOU ARE INTERESTED? --> We are always looking for talented people who are: --> --> team players --> passionate about aviation and technology --> like to learn from each other --> love what they do --> --> --> --> --> --> Software Test Automation Engineer --> The

requirements are: --> --> Minimum 4 years of experience as a test automation engineer --> API and UI testing (Selenium, JUNIT, …) + Java development skills --> Ability to understand our technology stack (Rest, Microservices, Kubernetes, Angular, …) --> Fluent business English language skills & Computer literate --> Keen eye for detail and good problem solving skills --> Good team player -->

Nice to have: Aviation Knowledge/Background -->

Nice to have: Security Testing Know-how --> --> What we offer: --> --> Warm and friendly work environment --> Superb infrastructure --> Working in a global environment for global customers --> Opportunity to travel to customers around the world --> Opportunity to grow with us and expand your skillset --> Salary: 50,000 - 60,000 EUR per year, depending on experience --> Contract Type: Full-time / permanent position --> Location: Vienna, Austria --> --> --> --> --> --> AIRCRAFT PERFORMANCE ENGINEER --> The

requirements / tasks are: --> --> Thorough understanding of (high speed) aircraft performance theory and physics, high-speed performance data administration for ~300 aircraft types, covering piston types, helicopters, business jets, large airliners and supersonic jets --> Working on customer enquiries about aircraft performance related matters. e.g. investigating pilot reports --> Understanding of low speed aircraft performance theory and physics --> Understanding of aircraft performance related flight regulations (FAA and EASA) --> Experience with aircraft performance tools such as Airbus PEP, Boeing BPS, Boeing PET, Bombardier CIFP,... --> Understanding of flight manual performance charts, creation of tables from OEM programs and other sources --> Validation and correction of imported data, maintenance and adaptation of transformation and validation scripts --> Fluent business English language skills, 2nd level customer support and troubleshooting, representation at conferences -->

Nice to have: programming skills in Python --> --> What we offer: --> --> Warm and friendly work environment --> Superb infrastructure --> Working in a global environment for global customers --> Opportunity to travel to customers around the world --> Opportunity to grow with us and expand your skillset --> Salary: 50,000 - 70,000 EUR per year (depending on your experience) --> Contract type: full-time / permanent position --> Location: Vienna, Austria --> --> --> --> --> --> --> YOU ARE INTERESTED? --> We are always looking for talented people who are: --> --> team players --> passionate about aviation and technology --> like to learn from each other --> love what they do --> --> --> --> Please send your application to: [email protected] Herrengasse 2-4, 1010 Vienna, Austria [email protected] Copyright 2026 FLIGHTKEYS | IMPRINT | WHISTLEBLOWING FLIGHTKEYS GmbH Gesellschaft mit beschränkter Haftung UID-Nr: ATU69584728 | FN: 432428 z | FB: Wien Firmensitz: Herrengasse 2-4, 1010 Vienna, Austria (Former Address: Mariahilfer Straße 47/1/TOP 102, 1060 Vienna, Austria) Mitglied der WKÖ

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