ABOUT ASTROBASE SPACE TECHNOLOGIES Astrobase Space Technologies is an early-stage Bengaluru company building a two-stage orbital launch vehicle. Our engine is a LOX–methane full-flow staged-combustion engine. The Astrobase Propulsion team is looking for experienced and passionate professionals who can own the vehicle's stage fluid and propulsion systems from design to flight. KEY RESPONSIBILITIES • Own the engine P&ID: propellant, cooling, purge, pressurisation, ignition, bleed and instrumentation circuits, with valve functions and failure states. • Build and maintain the steady-state power balance of the fuel-rich and oxidiser-rich preburner–turbopump loops; close the pressure schedule and allocate pressure drop to each component. • Map the operating envelope: throttle range, mixture-ratio excursions, pump inlet NPSP margins, and stage-interface pressures and temperatures. • Model start, shutdown, chill-down, priming and waterhammer transients; set valve timing and sequence constraints with the controls team. • Run sensitivity and Monte Carlo studies on component scatter and engine-to-engine variation; size calibration and trim orifices. • Write requirement specifications for pumps, turbines, preburners, valves, lines and heat exchangers, and the engine-to-stage and engine-to-stand ICDs. • Issue pre-test predictions and redlines; correlate the model with water, LN2 and hot-fire data and keep a model-validity record. • Run cycle trades for each engine iteration and record each decision with the analysis behind it. BASIC QUALIFICATION • B.E./B.Tech/M.E./M.Tech in Mechanical or Aerospace Engineering. • Min. 5+ years in liquid rocket engine system analysis or propulsion fluid-system design. • Has built a pump-fed engine cycle model (gas-generator, staged-combustion, expander or electric-pump) and correlated it with test data. • Turbopump power matching, pump and turbine maps, and real-fluid behaviour of LOX and methane near saturation. • Cycle and fluid-network tools: NPSS, ROCETS, EcosimPro/ESPSS or GFSSP; NASA CEA. • Python or MATLAB for analysis and test-data reduction. PREFERRED SKILLS & EXPERIENCE • Transient start and shutdown models on hardware that was later fired. • Staged-combustion experience, especially oxidiser-rich preburner circuits. • Cryogenic line chill-down, two-phase flow and geysering analysis. • Model verification and credibility practice per NASA-STD-7009B (Standard for Models and Simulations); NASA SP-125 design methods. • Has set test objectives and instrumentation for a component or engine test. WHAT WE OFFER • Salary: ₹24–36 LPA fixed CTC, variable pay based on experience and role fitment. • Attractive early-stage stock options (ESOPs). • Group health insurance: employee, spouse, children and parents. • Insurance: term-life and personal-accident cover. • Work environment: Challenging, stimulating, research-driven work solving rocket problems every day with a great team. We have a good time, and unlimited coffee. WHY WORK WITH US? At Astrobase, we believe in the power of human ingenuity and collaboration to push the boundaries of space exploration. As a team member, you’ll be: 1. Creating History: Join us in developing cutting-edge launch vehicles, playing a pivotal role in transforming space access and shaping the future of space exploration. 2. Collaborating with Experts: Work alongside ISRO scientists and industry veterans with decades of experience in designing India’s iconic space missions like Chandrayaan 3 3. Growth Opportunities: As Astrobase scales, you’ll have the chance to take on leadership roles and be part of an expanding organization driving change in the Indian space sector. 4. Pioneering Space Technology: Your contributions will not only impact Astrobase but also influence the global space ecosystem. Be part of something larger than yourself. Astrobase is an equal-opportunity employer; we hire on skills, merit and experience. Apply with your CV and a short note on combustion hardware you have designed, built or tested.