Dsp Software Engineer

Sine Engineering; Tampere; On-site; EUR 60,000 - 80,000; Full time

Benefits offered by this job

Lunch benefit

Wellbeing package

Gym budget

High-end equipment

Hackathons & offsites

Job summary

Sine Engineering in Finland is seeking DSP Software Engineers to join our embedded software team, building real-time signal processing for wireless systems from baseband to hardware interfaces. You'll work across experience levels, from early-career to senior contributors, translating algorithms into efficient implementations and collaborating with hardware, algorithm and architecture teams.

We offer a low‑crunch culture, strong autonomy, ongoing learning, flexible work hours, high-end

Qualifications

• Background in embedded DSP or low-level systems programming with project work.
• Strong proficiency in C/C++/Rust near hardware.
• Familiarity with RTOS (FreeRTOS, Zephyr) or bare-metal.

Responsibilities

• Develop embedded and DSP software for wireless systems — modem baseband, signal chain control, and real-time algorithms.
• Implement and optimize DSP algorithms on embedded targets and DSP cores.
• Develop low-level SoC software: drivers, HALs, bring-up, and APIs exposing on-chip peripherals.
• Work close to the hardware — interfaces with interconnects, DMA, high-speed interfaces, and RF paths.
• Collaborate with algorithm, hardware, and architecture teams to translate algorithmic intent into efficient embedded implementations.
• Contribute to test infrastructure, automation, and CI for embedded software.

Skills

Embedded software

DSP algorithms

C/C++/Rust

RTOS experience

Debugging

English proficient

Tools

Cadence Tensilica

CEVA DSP cores

ARM Helium

JTAG

JESD204B/C

Job description

We're looking for DSP Software Engineers to join our team. You'll work alongside an exceptional team of engineers, developing the embedded and DSP software that brings our silicon to life — from real-time wireless signal processing to the low-level APIs that the rest of the stack runs on.

We're hiring across experience levels, from engineers early in their career to senior contributors ready to own complex software subsystems.

Responsibilities:

• Develop embedded and/or DSP software for wireless communication systems — including modem baseband processing, signal chain control, calibration, and real-time algorithms.

• Implement and optimize DSP algorithms (filtering, synchronization, modulation/demodulation, channel estimation) on embedded targets and DSP cores.

• Develop low-level SoC software: drivers, hardware abstraction layers, bring-up code, and APIs exposing on-chip peripherals and accelerators to higher software layers.

• Work close to the hardware — interfacing with on-chip interconnects, DMA, high-speed interfaces, and RF transceiver control paths.

• Optimize for real-time constraints, performance, memory footprint, and power across embedded CPU, DSP, and accelerator targets.

• SoC bring-up and silicon validation — from first power-on, through driver and firmware bring-up, to stable system operation.

• Collaborate with algorithm, hardware, and architecture teams to translate algorithmic intent into efficient embedded implementations, and to shape hardware/software trade-offs early.

• Contribute to test infrastructure, automation, and continuous integration for embedded software.

Skills & Experience:

• Background in embedded software, DSP software, or low-level systems programming — from engineers with strong fundamentals and relevant project work, up to senior contributors with multiple silicon programs behind them.

• Strong proficiency in C/C++/Rust, with comfort working close to the hardware.

• Solid understanding of embedded systems concepts: real-time constraints, interrupts, DMA, memory hierarchies, and hardware/software interfaces.

• Familiarity with at least one of: DSP algorithm implementation, wireless modem software, or low-level driver / HAL development.

• Experience with bare-metal or RTOS environments (FreeRTOS, Zephyr, or equivalents).

• Debug skills across software and hardware boundaries — comfortable with logic analyzers, scopes, JTAG, and reading schematics when needed.

• Eagerness to learn, take ownership, and grow with the team.

• English proficiency at B1 level or higher.

Nice to Have:

• Experience with wireless communication systems (SDR, modem baseband, Wi-Fi, 5G/LTE, or proprietary radios).

• Hands-on experience with DSP cores (Cadence Tensilica, CEVA, ARM Helium, or similar) and DSP-specific optimization.

• Experience with fixed-point arithmetic and porting algorithms from MATLAB / Python references to embedded targets.

• Experience with high-speed interface drivers (JESD204B/C, MIPI CSI/DSI, PCIe).

• Experience bringing up custom silicon from first power-on to stable operation.

• Boot ROM development.

• Knowledge of cryptography, secure boot, or hardware-level security.

• Experience in defense or dual-use systems.

• Open-source contributions, embedded projects, or relevant portfolios (especially for early-career candidates).

What We Offer:

Paid Time Off: According to Finnish labor law.

Health & Wellness Package

• Lunch Benefit: daily lunch allowance up to the tax‑free limit as a fringe benefit.

• Sport & Culture: annual budget for gyms, sports activities, cultural events, and hobbies.

• Wellbeing Allowance: additional allowance for massage, mental health services, and other wellness support.

• Extended Occupational Healthcare: enhanced coverage including GP, specialists, mental health, and partial dental care.

• Accident Insurance (24/7): full coverage for accidents during both work and free time.

• Business Travel Insurance: coverage for work‑related travel.

• Company Phone + Subscription provided as a fringe benefit.

• Snacks & Office Comforts: coffee, snacks, fruits, and other office perks.

Work Model

• Flexible Working Hours: core hours from 10:00 to 15:00.

• No‑Crunch Policy: no systematic overtime; overtime is compensated or reimbursed.

• Meeting‑Light Culture: protected focus time and minimal unnecessary meetings.

Growth & Innovation

• High‑End Equipment: premium laptop, monitor, and peripherals.

• Lab & Gadget Budget: annual budget for hardware, tools, books, and learning materials.

• Hackathons & Offsites: regular internal events focused on innovation and technology.

Travel & Mobility

• Business Travel Expenses: full coverage of tickets, accommodation, and transportation.

• Per Diem (Vero Max): daily allowances according to the maximum tax‑free Vero rates.

Impact & Culture

• Low‑hierarchy, engineering‑driven environment with strong autonomy and zero micromanagement.

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