Careers
1. Lead Electron-Optics Engineer
Your Mission
- Own the complete electron-optical column: thermionic source, condenser & objective lenses, SE/BSE detectors.
- Push a tungsten cathode to ≤10 nm resolution at 20 kV, while also delivering a stable, high-current beam (≥1 nA) for analytical work—among the best ever reported for a thermionic system.
- Minimise spherical and chromatic aberrations through iterative modelling (COMSOL / SIMION / Opera-3D) and hardware prototyping.
- Derive and flow down stability & alignment budgets to high-voltage and mechanical teams (≤1 µm source drift / 8 hr, ≤50 nm lens-to-lens decenter).
- Design modular, UHV-compatible lens stacks that can later accept a Schottky or cold-field upgrade without a full redesign.
Who You Are
- PhD or 6+ yrs R&D in electron/ion optics, accelerator physics, or charged-particle instrumentation.
- Hands-on with high-vacuum hardware, electron guns, electrostatic/magnetic lens design.
- Fluent in at least one high-fidelity field solver (COMSOL, SIMION, CST).
- Comfort translating aberration theory into tolerance tables a machinist can hit.
2. Lead High-Voltage & Power Electronics Engineer
Your Mission
- Architect the floating HV stack:
- 30 kV, 200 µA beam supply
- 5 ppm rms ripple (10 Hz–1 MHz) at the gun terminal
- 20 ppm/hr long-term drift (including reference & tempco) at 25 °C ± 2 °C
- Design resonant converters (LLC) followed by ultra-low-noise linear post-regulators.
- Deliver arc-handling (≤5 µs crowbar) and IEC 61010-1 compliant safety interlocks.
- Create on-board diagnostics: 16-bit delta-sigma ADCs, optically-isolated feedback, FFT logging to the control system.
Who You Are
- 8+ yrs precision analog / power electronics; proven HV designs ≥5 kV.
- Expert in SPICE, magnetics design, PCB layout for >100 dB isolation.
- Obsessed with noise budgets, Kelvin sensing, and ppm-level calibration.
3. Lead Mechanical & Systems Integration Engineer
Your Mission
- Design a FEG-ready UHV envelope (250 mm Ø × 300 mm height, 150 °C bake) capable of achieving a base pressure of 5 × 10⁻⁹ mbar to support future cold-field or Schottky upgrades.
- Deliver a 5-axis stage:
- 50 mm × 50 mm × 25 mm travel
- ±10 nm bidirectional repeatability (1σ) with capacitive feedback
- ±100 nm absolute accuracy after error mapping
- Achieve ≤1 nm RMS vibration (10 Hz–1 kHz) via passive isolation + tuned mass dampers; ≤0.01 °C thermal stability over 24 hr.
- Own the assembly, integration & test (AIT) playbook for the first three prototypes.
Who You Are
- 8+ yrs precision mechanical design; UHV or semiconductor capital equipment strongly preferred.
- Fluent in SolidWorks / NX and FEA for structural, thermal, and modal analysis.
- Hands-on with interferometers, piezo actuators, and clean-room assembly.
4. Lead Control & Imaging Software Engineer
Your Mission
- Build the real-time beam controller on a Zynq Ultrascale+ (ARM+FPGA):
- Pixel clock ≤20 MHz with ±5 ns jitter
- Blanking rise/fall <25 ns into 50 Ω
- Implement closed-loop stage control using high-resolution position feedback; update PID at 10 kHz.
- Stream 16-bit detector data at 250 MB/s over PCIe to host memory.
- Ship imaging algorithms: auto-focus, auto-stigmation, drift correction running at ≥5 fps.
- Provide a clean, documented Python API for scripting and automated metrology.
Who You Are
- 6+ yrs C++17/C, Python, real-time Linux or RTOS; comfortable inside FPGA toolchains (Vivado, Verilog).
- Solid DSP & control theory background; not afraid of scope probes or logic analyzers.
- Bonus: prior work on SEM, TEM, or other charged-particle systems.
Join the Mission
Location: Bhopal
Timeline: First prototype in 18 months, production in 24 months.
Interested?
Share the hardest technical problem you have solved and why Bharat Atomic's mission fires you up along with your CV and Portfolio at: atharva@bharatatomic.com